1
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Li Y, Xiong Y, Zhai B, Yin L, Yu Y, Wang H, He J. Nondefective Vacancy Enhanced Resistive Switching Reliability in Emergent van der Waals Metal Phosphorus Trisulfide-Based Memristive In-Memory Computing Hardware. NANO LETTERS 2024. [PMID: 38912682 DOI: 10.1021/acs.nanolett.4c00212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
Two-dimensional-material-based memristors are emerging as promising enablers of new computing systems beyond von Neumann computers. However, the most studied anion-vacancy-enabled transition metal dichalcogenide memristors show many undesirable performances, e.g., high leakage currents, limited memory windows, high programming currents, and limited endurance. Here, we demonstrate that the emergent van der Waals metal phosphorus trisulfides with unconventional nondefective vacancy provide a promising paradigm for high-performance memristors. The different vacancy types (i.e., defective and nondefective vacancies) induced memristive discrepancies are uncovered. The nondefective vacancies can provide an ultralow diffusion barrier and good memristive structure stability giving rise to many desirable memristive performances, including high off-state resistance of 1012 Ω, pA-level programming currents, large memory window up to 109, more than 7-bit conductance states, and good endurance. Furthermore, a high-yield (94%) memristor crossbar array is fabricated and implements multiple image processing successfully, manifesting the potential for in-memory computing hardware.
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Affiliation(s)
- Yesheng Li
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, and School of Physical and Technology, Wuhan University, Wuhan 430072, China
- Suzhou Institute of Wuhan University, Suzhou 215123, China
| | - Yao Xiong
- School of Science, Wuhan University of Technology, Wuhan 430070, China
| | - Baoxing Zhai
- Institute of Semiconductors, Henan Academy of Sciences, Zhengzhou 450046, China
| | - Lei Yin
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, and School of Physical and Technology, Wuhan University, Wuhan 430072, China
| | - Yiling Yu
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, and School of Physical and Technology, Wuhan University, Wuhan 430072, China
| | - Hao Wang
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, and School of Physical and Technology, Wuhan University, Wuhan 430072, China
| | - Jun He
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, and School of Physical and Technology, Wuhan University, Wuhan 430072, China
- Institute of Semiconductors, Henan Academy of Sciences, Zhengzhou 450046, China
- Wuhan Institute of Quantum Technology, Wuhan 430206, China
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2
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Tan Q, Occhialini CA, Gao H, Li J, Kitadai H, Comin R, Ling X. Observation of Three-State Nematicity and Domain Evolution in Atomically Thin Antiferromagnetic NiPS 3. NANO LETTERS 2024. [PMID: 38856662 DOI: 10.1021/acs.nanolett.4c00772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Nickel phosphorus trisulfide (NiPS3), a van der Waals 2D antiferromagnet, has received significant interest for its intriguing properties in recent years. However, despite its fundamental importance in the physics of low-dimensional magnetism and promising potential for technological applications, the study of magnetic domains in NiPS3 down to an atomically thin state is still lacking. Here, we report the layer-dependent magnetic characteristics and magnetic domains in NiPS3 by employing linear dichroism spectroscopy, polarized microscopy, spin-correlated photoluminescence, and Raman spectroscopy. Our results reveal the existence of the paramagnetic-to-antiferromagnetic phase transition in bulk to bilayer NiPS3 and provide evidence of the role of stronger spin fluctuations in thin NiPS3. Furthermore, our study identifies three distinct antiferromagnetic domains within atomically thin NiPS3 and captures the thermally activated domain evolution. Our findings provide crucial insights for the development of antiferromagnetic spintronics and related technologies.
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Affiliation(s)
- Qishuo Tan
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Connor A Occhialini
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hongze Gao
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Jiaruo Li
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hikari Kitadai
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Riccardo Comin
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Xi Ling
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
- Division of Materials Science and Engineering, Boston University, Boston, Massachusetts 02215, United States
- The Photonics Center, Boston University, Boston, Massachusetts 02215, United States
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3
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Lee Y, Kim C, Son S, Cui J, Park G, Zhang KX, Oh S, Cheong H, Kleibert A, Park JG. Imaging Thermally Fluctuating Néel Vectors in van der Waals Antiferromagnet NiPS 3. NANO LETTERS 2024; 24:6043-6050. [PMID: 38717152 DOI: 10.1021/acs.nanolett.4c00804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Studying antiferromagnetic domains is essential for fundamental physics and potential spintronics applications. Despite their importance, few systematic studies have been performed on antiferromagnet (AFM) domains with high spatial resolution in van der Waals (vdW) materials, and direct probing of the Néel vectors remains challenging. In this work, we found multidomain states in the vdW AFM NiPS3, a material extensively investigated for its unique magnetic exciton. We employed photoemission electron microscopy combined with the X-ray magnetic linear dichroism (XMLD-PEEM) to image the NiPS3's magnetic structure. The nanometer-spatial resolution of XMLD-PEEM allows us to determine local Néel vector orientations and discover thermally fluctuating Néel vectors that are independent of the crystal symmetry even at 65 K, well below the TN of 155 K. We demonstrate that an in-plane orbital moment of the Ni ion is responsible for the weak magnetocrystalline anisotropy. The observed thermal fluctuations of the antiferromagnetic domains may explain the broadening of magnetic exciton peaks at higher temperatures.
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Affiliation(s)
- Youjin Lee
- Center for Quantum Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Physics and Astronomy & Institute of Applied Physics, Seoul National University, Seoul, 08826, Republic of Korea
| | - Chaebin Kim
- Center for Quantum Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Physics and Astronomy & Institute of Applied Physics, Seoul National University, Seoul, 08826, Republic of Korea
| | - Suhan Son
- Center for Quantum Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Physics and Astronomy & Institute of Applied Physics, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jingyuan Cui
- Center for Quantum Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Physics and Astronomy & Institute of Applied Physics, Seoul National University, Seoul, 08826, Republic of Korea
| | - Giung Park
- Center for Quantum Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Physics and Astronomy & Institute of Applied Physics, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kai-Xuan Zhang
- Center for Quantum Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Physics and Astronomy & Institute of Applied Physics, Seoul National University, Seoul, 08826, Republic of Korea
| | - Siwon Oh
- Department of Physics, Sogang University, Seoul, 04107, Republic of Korea
| | - Hyeonsik Cheong
- Department of Physics, Sogang University, Seoul, 04107, Republic of Korea
| | - Armin Kleibert
- Swiss Light Source, Paul Scherrer Institut, Villigen, PSI CH-5232, Switzerland
| | - Je-Geun Park
- Center for Quantum Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Physics and Astronomy & Institute of Applied Physics, Seoul National University, Seoul, 08826, Republic of Korea
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4
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He W, Shen Y, Wohlfeld K, Sears J, Li J, Pelliciari J, Walicki M, Johnston S, Baldini E, Bisogni V, Mitrano M, Dean MPM. Magnetically propagating Hund's exciton in van der Waals antiferromagnet NiPS 3. Nat Commun 2024; 15:3496. [PMID: 38664432 PMCID: PMC11045826 DOI: 10.1038/s41467-024-47852-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
Magnetic van der Waals (vdW) materials have opened new frontiers for realizing novel many-body phenomena. Recently NiPS3 has received intense interest since it hosts an excitonic quasiparticle whose properties appear to be intimately linked to the magnetic state of the lattice. Despite extensive studies, the electronic character, mobility, and magnetic interactions of the exciton remain unresolved. Here we address these issues by measuring NiPS3 with ultra-high energy resolution resonant inelastic x-ray scattering (RIXS). We find that Hund's exchange interactions are primarily responsible for the energy of formation of the exciton. Measuring the dispersion of the Hund's exciton reveals that it propagates in a way that is analogous to a double-magnon. We trace this unique behavior to fundamental similarities between the NiPS3 exciton hopping and spin exchange processes, underlining the unique magnetic characteristics of this novel quasiparticle.
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Affiliation(s)
- W He
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, NY, 11973, USA.
| | - Y Shen
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - K Wohlfeld
- Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Warsaw, PL-02093, Poland
| | - J Sears
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - J Li
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - J Pelliciari
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - M Walicki
- Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Warsaw, PL-02093, Poland
| | - S Johnston
- Department of Physics and Astronomy, The University of Tennessee, Knoxville, TN, 37996, USA
- Institute of Advanced Materials and Manufacturing, The University of Tennessee, Knoxville, TN, 37996, USA
| | - E Baldini
- Department of Physics, The University of Texas at Austin, Austin, TX, 78712, USA
| | - V Bisogni
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - M Mitrano
- Department of Physics, Harvard University, Cambridge, MA, 02138, USA
| | - M P M Dean
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, NY, 11973, USA.
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5
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Meineke C, Schlosser J, Zizlsperger M, Liebich M, Nilforoushan N, Mosina K, Terres S, Chernikov A, Sofer Z, Huber MA, Florian M, Kira M, Dirnberger F, Huber R. Ultrafast Exciton Dynamics in the Atomically Thin van der Waals Magnet CrSBr. NANO LETTERS 2024; 24:4101-4107. [PMID: 38507732 PMCID: PMC11010225 DOI: 10.1021/acs.nanolett.3c05010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 03/08/2024] [Accepted: 03/11/2024] [Indexed: 03/22/2024]
Abstract
Among atomically thin semiconductors, CrSBr stands out as both its bulk and monolayer forms host tightly bound, quasi-one-dimensional excitons in a magnetic environment. Despite its pivotal importance for solid-state research, the exciton lifetime has remained unknown. While terahertz polarization probing can directly trace all excitons, independently of interband selection rules, the corresponding large far-field foci substantially exceed the lateral sample dimensions. Here, we combine terahertz polarization spectroscopy with near-field microscopy to reveal a femtosecond decay of paramagnetic excitons in a monolayer of CrSBr, which is 30 times shorter than the bulk lifetime. We unveil low-energy fingerprints of bound and unbound electron-hole pairs in bulk CrSBr and extract the nonequilibrium dielectric function of the monolayer in a model-free manner. Our results demonstrate the first direct access to the ultrafast dielectric response of quasi-one-dimensional excitons in CrSBr, potentially advancing the development of quantum devices based on ultrathin van der Waals magnets.
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Affiliation(s)
- Christian Meineke
- Department
of Physics and Regensburg Center for Ultrafast Nanoscopy (RUN), University of Regensburg, 93040 Regensburg, Germany
| | - Jakob Schlosser
- Department
of Physics and Regensburg Center for Ultrafast Nanoscopy (RUN), University of Regensburg, 93040 Regensburg, Germany
| | - Martin Zizlsperger
- Department
of Physics and Regensburg Center for Ultrafast Nanoscopy (RUN), University of Regensburg, 93040 Regensburg, Germany
| | - Marlene Liebich
- Department
of Physics and Regensburg Center for Ultrafast Nanoscopy (RUN), University of Regensburg, 93040 Regensburg, Germany
| | - Niloufar Nilforoushan
- Department
of Physics and Regensburg Center for Ultrafast Nanoscopy (RUN), University of Regensburg, 93040 Regensburg, Germany
| | - Kseniia Mosina
- Department
of Inorganic Chemistry, University of Chemistry
and Technology Prague, 166 28 Prague 6, Czech Republic
| | - Sophia Terres
- Institute
of Applied Physics and Würzburg-Dresden Cluster of Excellence, Dresden University of Technology, 01187 Dresden, Germany
| | - Alexey Chernikov
- Institute
of Applied Physics and Würzburg-Dresden Cluster of Excellence, Dresden University of Technology, 01187 Dresden, Germany
| | - Zdenek Sofer
- Department
of Inorganic Chemistry, University of Chemistry
and Technology Prague, 166 28 Prague 6, Czech Republic
| | - Markus A. Huber
- Department
of Physics and Regensburg Center for Ultrafast Nanoscopy (RUN), University of Regensburg, 93040 Regensburg, Germany
| | - Matthias Florian
- Department
of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Mackillo Kira
- Department
of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Florian Dirnberger
- Institute
of Applied Physics and Würzburg-Dresden Cluster of Excellence, Dresden University of Technology, 01187 Dresden, Germany
| | - Rupert Huber
- Department
of Physics and Regensburg Center for Ultrafast Nanoscopy (RUN), University of Regensburg, 93040 Regensburg, Germany
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6
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Fang N, Wu C, Zhang Y, Li Z, Zhou Z. Perspectives: Light Control of Magnetism and Device Development. ACS NANO 2024; 18:8600-8625. [PMID: 38469753 DOI: 10.1021/acsnano.3c13002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Accurately controlling magnetic and spin states presents a significant challenge in spintronics, especially as demands for higher data storage density and increased processing speeds grow. Approaches such as light control are gradually supplanting traditional magnetic field methods. Traditionally, the modulation of magnetism was predominantly achieved through polarized light with the help of ultrafast light technologies. With the growing demand for energy efficiency and multifunctionality in spintronic devices, integrating photovoltaic materials into magnetoelectric systems has introduced more physical effects. This development suggests that sunlight will play an increasingly pivotal role in manipulating spin orientation in the future. This review introduces and concludes the influence of various light types on magnetism, exploring mechanisms such as magneto-optical (MO) effects, light-induced magnetic phase transitions, and spin photovoltaic effects. This review briefly summarizes recent advancements in the light control of magnetism, especially sunlight, and their potential applications, providing an optimistic perspective on future research directions in this area.
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Affiliation(s)
- Ning Fang
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
| | - Changqing Wu
- School of Environmental Science and Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Yuzhe Zhang
- School of Environmental Science and Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Zhongyu Li
- School of Environmental Science and Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Ziyao Zhou
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
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7
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Zhou X, Xu H, Zhang J, Tang L, Chen X, Mao Z. Re-emerging magnetic order in correlated van der Waals antiferromagnet NiPS 3. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:205803. [PMID: 38295441 DOI: 10.1088/1361-648x/ad24bd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 01/31/2024] [Indexed: 02/02/2024]
Abstract
Van der Waals (vdW) gap is a significant feature that distinguishes vdW magnets from traditional magnets. Manipulating the magnetic properties by changing the vdW gap has been hot topic in condensed matter research. Here we report a re-emerging magnetic order induced by pressure in a correlated vdW antiferromagnetic insulator NiPS3. It is found that the interlayer magnetoresistance (MR) nearly vanishes at the critical pressure where the crystal structure transforms fromC2/mphase to the slidingC2/mphase. On further compression within the slidingC2/mphase, a substantially enhanced MR emerges from low temperature associated with an insulator-to-metal transition, indicating a metallic antiferromagnetic phase. The enhanced re-emerging MR in slidingC2/mphase can be ascribed to the increasing magnetic interaction between neighboring layers due to the vdW gap narrowing. Our results provide important experimental clues for understanding the pressure effects on magnetism in correlated layered materials.
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Affiliation(s)
- Xueli Zhou
- School of Physics and Optoelectronics, South China University of Technology, Guangzhou, Guangdong 510641, People's Republic of China
| | - Haihong Xu
- School of Physics and Optoelectronics, South China University of Technology, Guangzhou, Guangdong 510641, People's Republic of China
| | - Jiang Zhang
- School of Physics and Optoelectronics, South China University of Technology, Guangzhou, Guangdong 510641, People's Republic of China
| | - Lingyun Tang
- School of Physics and Optoelectronics, South China University of Technology, Guangzhou, Guangdong 510641, People's Republic of China
| | - Xi Chen
- School of Physics and Optoelectronics, South China University of Technology, Guangzhou, Guangdong 510641, People's Republic of China
| | - Zhongquan Mao
- School of Physics and Optoelectronics, South China University of Technology, Guangzhou, Guangdong 510641, People's Republic of China
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8
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Weng Z, Zheng H, Li L, Lei W, Jiang H, Ang KW, Zhao Z. Reliable Memristor Crossbar Array Based on 2D Layered Nickel Phosphorus Trisulfide for Energy-Efficient Neuromorphic Hardware. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304518. [PMID: 37752744 DOI: 10.1002/smll.202304518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/04/2023] [Indexed: 09/28/2023]
Abstract
Designing reliable and energy-efficient memristors for artificial synaptic arrays in neuromorphic computing beyond von Neumann architecture remains a challenge. Here, memristors based on emerging layered nickel phosphorus trisulfide (NiPS3 ) are reported that exhibit several favorable characteristics, including uniform bipolar nonvolatile switching with small operating voltage (<1 V), fast switching speed (< 20 ns), high On/Off ratio (>102 ), and the ability to achieve programmable multilevel resistance states. Through direct experimental evidence using transmission electron microscopy and energy dispersive X-ray spectroscopy, it is revealed that the resistive switching mechanism in the Ti/NiPS3 /Au device is related to the formation and dissolution of Ti conductive filaments. Intriguingly, further investigation into the microstructural and chemical properties of NiPS3 suggests that the penetration of Ti ions is accompanied by the drift of phosphorus-sulfur ions, leading to induced P/S vacancies that facilitate the formation of conductive filaments. Furthermore, it is demonstrated that the memristor, when operating in quasi-reset mode, effectively emulates long-term synaptic weight plasticity. By utilizing a crossbar array, multipattern memorization and multiply-and-accumulate (MAC) operations are successfully implemented. Moreover, owing to the highly linear and symmetric multiple conductance states, a high pattern recognition accuracy of ≈96.4% is demonstrated in artificial neural network simulation for neuromorphic systems.
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Affiliation(s)
- Zhengjin Weng
- Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, China
| | - Haofei Zheng
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117583, Singapore
| | - Lingqi Li
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117583, Singapore
| | - Wei Lei
- Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, China
| | - Helong Jiang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology Chinese Academy of Sciences, Nanjing, 210008, China
| | - Kah-Wee Ang
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117583, Singapore
- Institute of Materials Research and Engineering, A*STAR, Singapore, 138634, Singapore
| | - Zhiwei Zhao
- Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, China
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9
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Katiyar AK, Hoang AT, Xu D, Hong J, Kim BJ, Ji S, Ahn JH. 2D Materials in Flexible Electronics: Recent Advances and Future Prospectives. Chem Rev 2024; 124:318-419. [PMID: 38055207 DOI: 10.1021/acs.chemrev.3c00302] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Flexible electronics have recently gained considerable attention due to their potential to provide new and innovative solutions to a wide range of challenges in various electronic fields. These electronics require specific material properties and performance because they need to be integrated into a variety of surfaces or folded and rolled for newly formatted electronics. Two-dimensional (2D) materials have emerged as promising candidates for flexible electronics due to their unique mechanical, electrical, and optical properties, as well as their compatibility with other materials, enabling the creation of various flexible electronic devices. This article provides a comprehensive review of the progress made in developing flexible electronic devices using 2D materials. In addition, it highlights the key aspects of materials, scalable material production, and device fabrication processes for flexible applications, along with important examples of demonstrations that achieved breakthroughs in various flexible and wearable electronic applications. Finally, we discuss the opportunities, current challenges, potential solutions, and future investigative directions about this field.
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Affiliation(s)
- Ajit Kumar Katiyar
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Anh Tuan Hoang
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Duo Xu
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Juyeong Hong
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Beom Jin Kim
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Seunghyeon Ji
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Jong-Hyun Ahn
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea
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10
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Yang Y, Liu J, Zhao C, Liang Q, Dong W, Shi J, Wang P, Kong D, Lv L, Jia L, Wang D, Huang C, Zheng S, Wang M, Liu F, Yu P, Qiao J, Ji W, Zhou J. A Universal Strategy for Synthesis of 2D Ternary Transition Metal Phosphorous Chalcogenides. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307237. [PMID: 37776266 DOI: 10.1002/adma.202307237] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/26/2023] [Indexed: 10/02/2023]
Abstract
The 2D ternary transition metal phosphorous chalcogenides (TMPCs) have attracted extensive research interest due to their widely tunable band gap, rich electronic properties, inherent magnetic and ferroelectric properties. However, the synthesis of TMPCs via chemical vapor deposition (CVD) is still challenging since it is difficult to control reactions among multi-precursors. Here, a subtractive element growth mechanism is proposed to controllably synthesize the TMPCs. Based on the growth mechanism, the TMPCs including FePS3 , FePSe3 , MnPS3 , MnPSe3 , CdPS3 , CdPSe3 , In2 P3 S9 , and SnPS3 are achieved successfully and further confirmed by Raman, second-harmonic generation (SHG), and scanning transmission electron microscopy (STEM). The typical TMPCs-SnPS3 shows a strong SHG signal at 1064 nm, with an effective nonlinear susceptibility χ(2) of 8.41 × 10-11 m V-1 , which is about 8 times of that in MoS2 . And the photodetector based on CdPSe3 exhibits superior detection performances with responsivity of 582 mA W-1 , high detectivity of 3.19 × 1011 Jones, and fast rise time of 611 µs, which is better than most previously reported TMPCs-based photodetectors. These results demonstrate the high quality of TMPCs and promote the exploration of the optical properties of 2D TMPCs for their applications in optoelectronics.
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Affiliation(s)
- Yang Yang
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, 10081, China
| | - Jijian Liu
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, 10081, China
| | - Chunyu Zhao
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, 10081, China
| | - Qingrong Liang
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, 10081, China
| | - Weikang Dong
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, 10081, China
| | - Jia Shi
- Institute of Information Photonics Technology and School of Physics and Optoelectronics, Faculty of Science, Beijing University of Technology, Beijing, 100124, China
| | - Ping Wang
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, 10081, China
| | - Denan Kong
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, 10081, China
| | - Lu Lv
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, 10081, China
| | - Lin Jia
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, 10081, China
| | - Dainan Wang
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, 10081, China
| | - Chun Huang
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, 10081, China
| | - Shoujun Zheng
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, 10081, China
| | - Meiling Wang
- School of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030002, China
| | - Fucai Liu
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Peng Yu
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Jingsi Qiao
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, 10081, China
| | - Wei Ji
- Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-Nano Devices, Department of Physics, Renmin University of China, Beijing, 100872, China
| | - Jiadong Zhou
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, 10081, China
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, 10081, China
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11
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Kang H, Ma J, Li J, Zhang X, Liu X. Exciton Polaritons in Emergent Two-Dimensional Semiconductors. ACS NANO 2023; 17:24449-24467. [PMID: 38051774 DOI: 10.1021/acsnano.3c07993] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
The "marriage" of light (i.e., photon) and matter (i.e., exciton) in semiconductors leads to the formation of hybrid quasiparticles called exciton polaritons with fascinating quantum phenomena such as Bose-Einstein condensation (BEC) and photon blockade. The research of exciton polaritons has been evolving into an era with emergent two-dimensional (2D) semiconductors and photonic structures for their tremendous potential to break the current limitations of quantum fundamental study and photonic applications. In this Perspective, the basic concepts of 2D excitons, optical resonators, and the strong coupling regime are introduced. The research progress of exciton polaritons is reviewed, and important discoveries (especially the recent ones of 2D exciton polaritons) are highlighted. Subsequently, the emergent 2D exciton polaritons are discussed in detail, ranging from the realization of the strong coupling regime in various photonic systems to the discoveries of attractive phenomena with interesting physics and extensive applications. Moreover, emerging 2D semiconductors, such as 2D perovskites (2DPK) and 2D antiferromagnetic (AFM) semiconductors, are surveyed for the manipulation of exciton polaritons with distinct control degrees of freedom (DOFs). Finally, the outlook on the 2D exciton polaritons and their nonlinear interactions is presented with our initial numerical simulations. This Perspective not only aims to provide an in-depth overview of the latest fundamental findings in 2D exciton polaritons but also attempts to serve as a valuable resource to prospect explorations of quantum optics and topological photonic applications.
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Affiliation(s)
- Haifeng Kang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China
| | - Jingwen Ma
- Faculty of Science and Engineering, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Junyu Li
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China
| | - Xiang Zhang
- Faculty of Science and Engineering, The University of Hong Kong, Hong Kong, SAR, P. R. China
- Department of Physics, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Xiaoze Liu
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China
- Wuhan Institute of Quantum Technology, Wuhan, 430206, P. R. China
- Wuhan University Shenzhen Research Institute, Shenzhen, 518057, P. R. China
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12
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Klaproth T, Aswartham S, Shemerliuk Y, Selter S, Janson O, van den Brink J, Büchner B, Knupfer M, Pazek S, Mikhailova D, Efimenko A, Hayn R, Savoyant A, Gubanov V, Koitzsch A. Origin of the Magnetic Exciton in the van der Waals Antiferromagnet NiPS_{3}. PHYSICAL REVIEW LETTERS 2023; 131:256504. [PMID: 38181357 DOI: 10.1103/physrevlett.131.256504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 09/29/2023] [Accepted: 10/03/2023] [Indexed: 01/07/2024]
Abstract
An ultrasharp photoluminescence line intimately related to antiferromagnetic order has been found in NiPS_{3}, a correlated van der Waals material, opening prospects for magneto-optical coupling schemes and spintronic applications. Here we unambiguously clarify the singlet origin of this excitation, confirming its roots in the spin structure. Based on a comprehensive investigation of the electronic structure using angle-resolved photoemission and q-dependent electron energy loss spectroscopy as experimental tools we develop, in a first step, an adequate theoretical understanding using density functional theory (DFT). In a second step the DFT is used as input for a dedicated multiplet theory by which we achieve excellent agreement with available multiplet spectroscopy. Our Letter connects the understanding of the electronic structure and of optical processes in NiPS_{3} and related materials as a prerequisite for further progress of the field.
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Affiliation(s)
- T Klaproth
- Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
| | - S Aswartham
- Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
| | - Y Shemerliuk
- Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
| | - S Selter
- Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
| | - O Janson
- Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
| | - J van den Brink
- Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
| | - B Büchner
- Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
- Institute of Solid State and Material Physics, Technische Universität Dresden, 01062 Dresden, Germany
| | - M Knupfer
- Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
| | - S Pazek
- Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
| | - D Mikhailova
- Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
| | - A Efimenko
- Helmholtz-Zentrum Berlin für Materialien und Energie, Interface Design, Albert Einstein Str. 15, 12489 Berlin, Germany
- Helmholtz Zentrum Berlin für Materialien und Energie, Energy Materials In-situ Laboratory Berlin (EMIL), Albert Einstein Str. 15, 12489 Berlin, Germany
| | - R Hayn
- Aix-Marseille Université, Centre National de la Recherche Scientifique, IM2NP-UMR 7334, 13397 Marseille Cedex 20, France
| | - A Savoyant
- Aix-Marseille Université, Centre National de la Recherche Scientifique, IM2NP-UMR 7334, 13397 Marseille Cedex 20, France
| | - V Gubanov
- Aix-Marseille Université, Centre National de la Recherche Scientifique, IM2NP-UMR 7334, 13397 Marseille Cedex 20, France
| | - A Koitzsch
- Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
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13
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Kim J, Na W, Kim J, Park P, Zhang K, Hwang I, Son YW, Kim JH, Cheong H, Park JG. Rapid Suppression of Quantum Many-Body Magnetic Exciton in Doped van der Waals Antiferromagnet (Ni,Cd)PS 3. NANO LETTERS 2023; 23:10189-10195. [PMID: 37931216 DOI: 10.1021/acs.nanolett.3c02677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
The unique discovery of the magnetic exciton in van der Waals antiferromagnet NiPS3 arises between two quantum many-body states of a Zhang-Rice singlet excited state and a Zhang-Rice triplet ground state. Simultaneously, the spectral width of photoluminescence originating from this exciton is exceedingly narrow as 0.4 meV. These extraordinary properties, including the extreme coherence of the magnetic exciton in NiPS3, beg many questions. We studied doping effects using Ni1-xCdxPS3 using two experimental techniques and theoretical studies. Our experimental results show that the magnetic exciton is drastically suppressed upon a few % Cd doping. All this happens while the width of the exciton only gradually increases and the antiferromagnetic ground state is robust. These results highlight the lattice uniformity's hidden importance as a prerequisite for coherent magnetic exciton. Finally, an exciting scenario emerges: the broken charge transfer forbids the otherwise uniform formation of the coherent magnetic exciton in (Ni,Cd)PS3.
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Affiliation(s)
- Junghyun Kim
- Center for Quantum Materials, Seoul National University, Seoul 08826, Republic of Korea
- Department of Physics & Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - Woongki Na
- Department of Physics, Sogang University, Seoul 04107, Republic of Korea
| | - Jonghyeon Kim
- Department of Physics, Yonsei University, Seoul 03722, Republic of Korea
| | - Pyeongjae Park
- Center for Quantum Materials, Seoul National University, Seoul 08826, Republic of Korea
- Department of Physics & Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - Kaixuan Zhang
- Center for Quantum Materials, Seoul National University, Seoul 08826, Republic of Korea
- Department of Physics & Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - Inho Hwang
- Center for Quantum Materials, Seoul National University, Seoul 08826, Republic of Korea
- Department of Physics & Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - Young-Woo Son
- School of Computational Sciences, Korea Institute for Advanced Study, Seoul 02455, Republic of Korea
| | - Jae Hoon Kim
- Department of Physics, Yonsei University, Seoul 03722, Republic of Korea
| | - Hyeonsik Cheong
- Department of Physics, Sogang University, Seoul 04107, Republic of Korea
| | - Je-Geun Park
- Center for Quantum Materials, Seoul National University, Seoul 08826, Republic of Korea
- Department of Physics & Astronomy, Seoul National University, Seoul 08826, Republic of Korea
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14
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Strasdas J, Pestka B, Rybak M, Budniak AK, Leuth N, Boban H, Feyer V, Cojocariu I, Baranowski D, Avila J, Dudin P, Bostwick A, Jozwiak C, Rotenberg E, Autieri C, Amouyal Y, Plucinski L, Lifshitz E, Birowska M, Morgenstern M. Electronic Band Structure Changes across the Antiferromagnetic Phase Transition of Exfoliated MnPS 3 Flakes Probed by μ-ARPES. NANO LETTERS 2023; 23:10342-10349. [PMID: 37922394 DOI: 10.1021/acs.nanolett.3c02906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2023]
Abstract
Exfoliated magnetic 2D materials enable versatile tuning of magnetization, e.g., by gating or providing proximity-induced exchange interaction. However, their electronic band structure after exfoliation has not been probed, presumably due to their photochemical sensitivity. Here, we provide micrometer-scale angle-resolved photoelectron spectroscopy of the exfoliated intralayer antiferromagnet MnPS3 above and below the Néel temperature down to one monolayer. Favorable comparison with density functional theory calculations enables identifying the orbital character of the observed bands. Consistently, we find pronounced changes across the Néel temperature for bands consisting of Mn 3d and 3p levels of adjacent S atoms. The deduced orbital mixture indicates that the superexchange is relevant for the magnetic interaction. There are only minor changes between monolayer and thicker films, demonstrating the predominant 2D character of MnPS3. The novel access is transferable to other MPX3 materials (M: transition metal, P: phosphorus, X: chalcogenide), providing several antiferromagnetic arrangements.
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Affiliation(s)
- Jeff Strasdas
- II. Institute of Physics B and JARA-FIT, RWTH-Aachen University, 52074 Aachen, Germany
| | - Benjamin Pestka
- II. Institute of Physics B and JARA-FIT, RWTH-Aachen University, 52074 Aachen, Germany
| | - Miłosz Rybak
- Department of Semiconductor Materials Engineering, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, WybrzeŻe Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Adam K Budniak
- Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute and Helen Diller Quantum Center, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Niklas Leuth
- II. Institute of Physics B and JARA-FIT, RWTH-Aachen University, 52074 Aachen, Germany
| | - Honey Boban
- Peter Grünberg Institute (PGI-6), Forschungszentrum Jülich, Jülich 52428, Germany
| | - Vitaliy Feyer
- Peter Grünberg Institute (PGI-6), Forschungszentrum Jülich, Jülich 52428, Germany
| | - Iulia Cojocariu
- Peter Grünberg Institute (PGI-6), Forschungszentrum Jülich, Jülich 52428, Germany
| | - Daniel Baranowski
- Peter Grünberg Institute (PGI-6), Forschungszentrum Jülich, Jülich 52428, Germany
| | - José Avila
- Synchrotron-SOLEIL, Université Paris-Saclay, Saint-Aubin, BP48, Gif sur Yvette, Paris F91192, France
| | - Pavel Dudin
- Synchrotron-SOLEIL, Université Paris-Saclay, Saint-Aubin, BP48, Gif sur Yvette, Paris F91192, France
| | - Aaron Bostwick
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
| | - Chris Jozwiak
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
| | - Eli Rotenberg
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
| | - Carmine Autieri
- International Research Centre MagTop, Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, PL-02668 Warsaw, Poland
| | - Yaron Amouyal
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Lukasz Plucinski
- Peter Grünberg Institute (PGI-6), Forschungszentrum Jülich, Jülich 52428, Germany
| | - Efrat Lifshitz
- Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute and Helen Diller Quantum Center, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Magdalena Birowska
- Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
| | - Markus Morgenstern
- II. Institute of Physics B and JARA-FIT, RWTH-Aachen University, 52074 Aachen, Germany
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15
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Yan S, Du Y, Zhang X, Wan X, Wang D. First-principles study of magnetic interactions and excitations in antiferromagnetic van der Waals material MPX 3(M=Mn, Fe, Co, Ni; X=S, Se). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 36:065502. [PMID: 37879344 DOI: 10.1088/1361-648x/ad06ef] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 10/25/2023] [Indexed: 10/27/2023]
Abstract
Transition metal phosphorus trichalcogenides MPX3(M = Mn, Fe, Co, Ni; X = S, Se), as layered van der Waals antiferromagnetic (AFM) materials, have emerged as a promising platform for exploring two-dimensional (2D) magnetism. Based on density functional theory, we present a comprehensive investigation of the electronic and magnetic properties of MPX3. We calculated the spin exchange interactions as well as magnetocrystalline anisotropy energy. The numerical results reveal thatJ3is AFM in all cases, andJ2is significantly smaller compared to bothJ3andJ1. This behavior can be understood with regard to exchange paths and electron filling. Compared to other materials within this family, FePS3and CoPS3demonstrate significant easy-axis anisotropy. Using the obtained parameters, we estimated the Néel temperatureTNand Curie-Weiss temperatureθCW, and the results are in good agreement with the experimental observations. We further calculated the magnon spectra and successfully reproduce several typical features observed experimentally. Finally, we give helpful suggestions for the strong constraints about the range of non-negligible magnetic interactions based on the relations between magnon eigenvalues at high-symmetrykpoints in honeycomb lattices.
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Affiliation(s)
- Songsong Yan
- National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, People's Republic of China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
- International Quantum Academy, Shenzhen 518048, People's Republic of China
| | - Yongping Du
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
- Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - Xiaoou Zhang
- Department of Quality Education, Nanjing Vocational College of Information Technology, Nanjing 210023, People's Republic of China
| | - Xiangang Wan
- National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, People's Republic of China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
| | - Di Wang
- National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, People's Republic of China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
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16
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Yan M, Jin Y, Voloshina E, Dedkov Y. Electronic Correlations in Fe xNi yPS 3 Van der Waals Materials: Insights from Angle-Resolved Photoelectron Spectroscopy and DFT. J Phys Chem Lett 2023; 14:9774-9779. [PMID: 37882477 DOI: 10.1021/acs.jpclett.3c02688] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
Recently layered antiferromagnetic materials with different magnetic orderings attract increased attention. It was found that these properties can be preserved down to the monolayer limit opening large perspectives for their applications in (opto)spintronics and sensing, however, lacking the experimental results on electronic structure studies. Here the results of angle-resolved photoelectron spectroscopy (ARPES) studies accompanied by DFT calculations for FexNiyPS3 layered van der Waals (vdW) alloys are presented, addressing the effects of electronic correlations in these materials. It is demonstrated that in the case of FePS3 the top of the valence band is formed by the hybrid Fe 3d-S 3p states and is of pure S 3p character for NiPS3, respectively, whereas for the mixed Fe-Ni-based vdW alloy the electronic structure is a sum of contributions from the parent compounds. The obtained results give a clear understanding of the nature of the insulating state in studied MPX3 materials and pave the way on their applications in different areas.
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Affiliation(s)
- Mouhui Yan
- Department of Physics, Shanghai University, 99 Shangda Road, 200444 Shanghai, P. R. China
- State Key Laboratory of Advanced Special Steel & School of Materials Science and Engineering, Shanghai University, 99 Shangda Road, 200444 Shanghai, P. R. China
| | - Yichen Jin
- Department of Physics, Shanghai University, 99 Shangda Road, 200444 Shanghai, P. R. China
- Department of Physics, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | - Elena Voloshina
- Department of Physics, Shanghai University, 99 Shangda Road, 200444 Shanghai, P. R. China
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Yuriy Dedkov
- Department of Physics, Shanghai University, 99 Shangda Road, 200444 Shanghai, P. R. China
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17
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Li X, Jones AC, Choi J, Zhao H, Chandrasekaran V, Pettes MT, Piryatinski A, Tschudin MA, Reiser P, Broadway DA, Maletinsky P, Sinitsyn N, Crooker SA, Htoon H. Proximity-induced chiral quantum light generation in strain-engineered WSe 2/NiPS 3 heterostructures. NATURE MATERIALS 2023; 22:1311-1316. [PMID: 37592028 DOI: 10.1038/s41563-023-01645-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Accepted: 07/18/2023] [Indexed: 08/19/2023]
Abstract
Quantum light emitters capable of generating single photons with circular polarization and non-classical statistics could enable non-reciprocal single-photon devices and deterministic spin-photon interfaces for quantum networks. To date, the emission of such chiral quantum light relies on the application of intense external magnetic fields, electrical/optical injection of spin-polarized carriers/excitons or coupling with complex photonic metastructures. Here we report the creation of free-space chiral quantum light emitters via the nanoindentation of monolayer WSe2/NiPS3 heterostructures at zero external magnetic field. These quantum light emitters emit with a high degree of circular polarization (0.89) and single-photon purity (95%), independent of pump laser polarization. Scanning diamond nitrogen-vacancy microscopy and temperature-dependent magneto-photoluminescence studies reveal that the chiral quantum light emission arises from magnetic proximity interactions between localized excitons in the WSe2 monolayer and the out-of-plane magnetization of defects in the antiferromagnetic order of NiPS3, both of which are co-localized by strain fields associated with the nanoscale indentations.
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Affiliation(s)
- Xiangzhi Li
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Andrew C Jones
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Junho Choi
- National High Magnetic Field Laboratory, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Huan Zhao
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Vigneshwaran Chandrasekaran
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Michael T Pettes
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Andrei Piryatinski
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | | | - Patrick Reiser
- Department of Physics, University of Basel, Basel, Switzerland
| | | | | | - Nikolai Sinitsyn
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Scott A Crooker
- National High Magnetic Field Laboratory, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Han Htoon
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM, USA.
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18
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Tang J, Ling X. Magnetic proximity boosts chiral quantum emission. NATURE MATERIALS 2023; 22:1279-1280. [PMID: 37891263 DOI: 10.1038/s41563-023-01691-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/29/2023]
Affiliation(s)
- Jing Tang
- Division of Materials Science and Engineering, Boston University, Boston, MA, USA
| | - Xi Ling
- Division of Materials Science and Engineering, Boston University, Boston, MA, USA.
- Department of Chemistry, Boston University, Boston, MA, USA.
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19
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Liu S, Malik IA, Zhang VL, Yu T. Lightning the Spin: Harnessing the Potential of 2D Magnets in Opto-Spintronics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2306920. [PMID: 37905890 DOI: 10.1002/adma.202306920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/20/2023] [Indexed: 11/02/2023]
Abstract
Since the emergence of 2D magnets in 2017, the diversity of these materials has greatly expanded. Their 2D nature (atomic-scale thickness) endows these magnets with strong magnetic anisotropy, layer-dependent and switchable magnetic order, and quantum-confined quasiparticles, which distinguish them from conventional 3D magnetic materials. Moreover, the 2D geometry facilitates light incidence for opto-spintronic applications and potential on-chip integration. In analogy to optoelectronics based on optical-electronic interactions, opto-spintronics use light-spin interactions to process spin information stored in the solid state. In this review, opto-spintronics is divided into three types with respect to the wavelengths of radiation interacting with 2D magnets: 1) GHz (microwave) to THz (mid-infrared), 2) visible, and 3) UV to X-rays. It is focused on the recent research advancements on the newly discovered mechanisms of light-spin interactions in 2D magnets and introduces the potential design of novel opto-spintronic applications based on these interactions.
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Affiliation(s)
- Sheng Liu
- School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China
| | | | - Vanessa Li Zhang
- School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China
| | - Ting Yu
- School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China
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20
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Wang T, Zhang D, Yang S, Lin Z, Chen Q, Yang J, Gong Q, Chen Z, Ye Y, Liu W. Magnetically-dressed CrSBr exciton-polaritons in ultrastrong coupling regime. Nat Commun 2023; 14:5966. [PMID: 37749106 PMCID: PMC10520032 DOI: 10.1038/s41467-023-41688-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 09/14/2023] [Indexed: 09/27/2023] Open
Abstract
Over the past few decades, exciton-polaritons have attracted substantial research interest due to their half-light-half-matter bosonic nature. Coupling exciton-polaritons with magnetic orders grants access to rich many-body phenomena, but has been limited by the availability of material systems that exhibit simultaneous exciton resonances and magnetic ordering. Here we report magnetically-dressed microcavity exciton-polaritons in the van der Waals antiferromagnetic (AFM) semiconductor CrSBr coupled to a Tamm plasmon microcavity. Using angle-resolved spectroscopy, we reveal an exceptionally high exciton-photon coupling strength, up to 169 meV, demonstrating ultrastrong coupling that persists up to room temperature. By performing temperature-dependent spectroscopy, we show the magnetic nature of the exciton-polaritons in CrSBr microcavity as the magnetic order changes from AFM to paramagnetic. By applying an out-of-plane magnetic field, we achieve effective tuning of the polariton energy while maintaining the ultrastrong exciton-photon coupling strength. We attribute this to the spin canting process that modulates the interlayer exciton interaction.
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Affiliation(s)
- Tingting Wang
- State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, 100871, China
- Collaborative Innovation Center of Quantum Matter, Beijing, 100871, China
| | - Dingyang Zhang
- State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, 100871, China
| | - Shiqi Yang
- State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, 100871, China
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China
| | - Zhongchong Lin
- State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, 100871, China
| | - Quan Chen
- School of Semiconductor Science and Technology, South China Normal University, Foshan, 528225, China
| | - Jinbo Yang
- State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, 100871, China
| | - Qihuang Gong
- State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, 100871, China
- Yangtze Delta Institute of Optoelectronics, Peking University, Nantong, 226010, China
- Liaoning Academy of Materials, Shenyang, 110167, China
| | - Zuxin Chen
- School of Semiconductor Science and Technology, South China Normal University, Foshan, 528225, China.
| | - Yu Ye
- State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, 100871, China.
- Collaborative Innovation Center of Quantum Matter, Beijing, 100871, China.
- Yangtze Delta Institute of Optoelectronics, Peking University, Nantong, 226010, China.
- Liaoning Academy of Materials, Shenyang, 110167, China.
| | - Wenjing Liu
- State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, 100871, China.
- Yangtze Delta Institute of Optoelectronics, Peking University, Nantong, 226010, China.
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China.
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21
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Wu Y, Hu Y, Wang C, Zhou X, Hou X, Xia W, Zhang Y, Wang J, Ding Y, He J, Dong P, Bao S, Wen J, Guo Y, Watanabe K, Taniguchi T, Ji W, Wang ZJ, Li J. Fe-Intercalation Dominated Ferromagnetism of van der Waals Fe 3 GeTe 2. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2302568. [PMID: 37285053 DOI: 10.1002/adma.202302568] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/25/2023] [Indexed: 06/08/2023]
Abstract
Fe3 GeTe2 have proven to be of greatly intrigue. However, the underlying mechanism behind the varying Curie temperature (Tc ) values remains a puzzle. This study explores the atomic structure of Fe3 GeTe2 crystals exhibiting Tc values of 160, 210, and 230 K. The elemental mapping reveals a Fe-intercalation on the interstitial sites within the van der Waals gap of the high-Tc (210 and 230 K) samples, which are observed to have an exchange bias effect by electrical transport measurements, while Fe intercalation or the bias effect is absent in the low-Tc (160 K) samples. First-principles calculations further suggest that the Fe-intercalation layer may be responsible for the local antiferromagnetic coupling that gives rise to the exchange bias effect, and that the interlayer exchange paths greatly contribute to the enhancement of Tc . This discovery of the Fe-intercalation layer elucidates the mechanism behind the hidden antiferromagnetic ordering that underlies the enhancement of Tc in Fe3 GeTe2 .
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Affiliation(s)
- Yueshen Wu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Yuxiong Hu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Cong Wang
- Beijing Key Laboratory of Optoelectronic Functional Materials and Micro-Nano Devices, Department of Physics, Renmin University of China, Beijing, 100872, China
- Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education), Renmin University of China, Beijing, 100872, China
| | - Xiang Zhou
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, 200031, China
| | - Xiaofei Hou
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, 200031, China
| | - Wei Xia
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, 200031, China
| | - Yiwen Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, 200031, China
| | - Jinghui Wang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, 200031, China
| | - Yifan Ding
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, 200031, China
| | - Jiadian He
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, 200031, China
| | - Peng Dong
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, 200031, China
| | - Song Bao
- School of Physics & Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Jinsheng Wen
- School of Physics & Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Yanfeng Guo
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, 200031, China
| | - Kenji Watanabe
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
| | - Takashi Taniguchi
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
| | - Wei Ji
- Beijing Key Laboratory of Optoelectronic Functional Materials and Micro-Nano Devices, Department of Physics, Renmin University of China, Beijing, 100872, China
| | - Zhu-Jun Wang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Jun Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai, 200050, China
- Wuhan National High Magnetic Field Center, Huazhong University of Science & Technology, Wuhan, 430074, China
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22
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Baithi M, Dang NT, Tran TA, Fix JP, Luong DH, Dhakal KP, Yoon D, Rutkauskas AV, Kichanov SE, Zel IY, Kim J, Borys NJ, Kozlenko DP, Lee YH, Duong DL. Incommensurate Antiferromagnetic Order in Weakly Frustrated Two-Dimensional van der Waals Insulator CrPSe 3. Inorg Chem 2023; 62:12674-12682. [PMID: 37531606 DOI: 10.1021/acs.inorgchem.3c00795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Although magnetic order is suppressed by a strong frustration, it appears in complex forms such as a cycloid or spin density wave in weakly frustrated systems. Herein, we report a weakly magnetically frustrated two-dimensional (2D) van der Waals material CrPSe3. Polycrystalline CrPSe3 was synthesized at an optimized temperature of 700 °C to avoid the formation of any secondary phases (e.g., Cr2Se3). The antiferromagnetic transition appeared at TN ≈ 127 K with a large Curie-Weiss temperature θCW ≈ -301 K via magnetic susceptibility measurements, indicating weak frustration in CrPSe3 with a frustration factor of f (|θCW|/TN) ≈ 2.4. Evidently, the formation of a long-range incommensurate antiferromagnetic order was revealed by neutron diffraction measurements at low temperatures (below 120 K). The monoclinic crystal structure of the C2/m symmetry is preserved over the studied temperature range down to 20 K, as confirmed by Raman spectroscopy measurements. Our findings on the incommensurate antiferromagnetic order in 2D magnetic materials, not previously observed in the MPX3 family, are expected to enrich the physics of magnetism at the 2D limit, thereby opening opportunities for their practical applications in spintronics and quantum devices.
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Affiliation(s)
- Mallesh Baithi
- Center for Integrated Nanostructure Physics, Institute for Basic Science, Suwon 16419, Republic of Korea
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ngoc Toan Dang
- Institute of Research and Development, Duy Tan University, Danang 550000, Viet Nam
- Faculty of Environmental and Natural Sciences, Duy Tan University, Danang 550000, Viet Nam
| | - Tuan Anh Tran
- Ho Chi Minh City University of Technology and Education, Ho Chi Minh 700000, Viet Nam
| | - J Pierce Fix
- Department of Physics and Materials Science Program, Montana State University, Bozeman, Montana 59717, United States
- MonArk NSF Quantum Foundry, Montana State University, Bozeman, Montana 59717, United States
| | - Dinh Hoa Luong
- Center for Integrated Nanostructure Physics, Institute for Basic Science, Suwon 16419, Republic of Korea
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Krishna P Dhakal
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Duhee Yoon
- Center for Integrated Nanostructure Physics, Institute for Basic Science, Suwon 16419, Republic of Korea
| | - Anton V Rutkauskas
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - Sergei E Kichanov
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - Ivan Y Zel
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - Jeongyong Kim
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Nicholas J Borys
- Department of Physics and Materials Science Program, Montana State University, Bozeman, Montana 59717, United States
- MonArk NSF Quantum Foundry, Montana State University, Bozeman, Montana 59717, United States
| | - Denis P Kozlenko
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - Young Hee Lee
- Center for Integrated Nanostructure Physics, Institute for Basic Science, Suwon 16419, Republic of Korea
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Dinh Loc Duong
- Center for Integrated Nanostructure Physics, Institute for Basic Science, Suwon 16419, Republic of Korea
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
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23
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Dirnberger F, Quan J, Bushati R, Diederich GM, Florian M, Klein J, Mosina K, Sofer Z, Xu X, Kamra A, García-Vidal FJ, Alù A, Menon VM. Magneto-optics in a van der Waals magnet tuned by self-hybridized polaritons. Nature 2023; 620:533-537. [PMID: 37587298 DOI: 10.1038/s41586-023-06275-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 05/31/2023] [Indexed: 08/18/2023]
Abstract
Controlling quantum materials with light is of fundamental and technological importance. By utilizing the strong coupling of light and matter in optical cavities1-3, recent studies were able to modify some of their most defining features4-6. Here we study the magneto-optical properties of a van der Waals magnet that supports strong coupling of photons and excitons even in the absence of external cavity mirrors. In this material-the layered magnetic semiconductor CrSBr-emergent light-matter hybrids called polaritons are shown to substantially increase the spectral bandwidth of correlations between the magnetic, electronic and optical properties, enabling largely tunable optical responses to applied magnetic fields and magnons. Our results highlight the importance of exciton-photon self-hybridization in van der Waals magnets and motivate novel directions for the manipulation of quantum material properties by strong light-matter coupling.
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Affiliation(s)
| | - Jiamin Quan
- Department of Physics, The Graduate Center, City University of New York, New York, NY, USA
- Photonics Initiative, CUNY Advanced Science Research Center, New York, NY, USA
- Department of Electrical Engineering, City College of the City University of New York, New York, NY, USA
| | - Rezlind Bushati
- Department of Physics, City College of New York, New York, NY, USA
- Department of Physics, The Graduate Center, City University of New York, New York, NY, USA
| | - Geoffrey M Diederich
- Intelligence Community Postdoctoral Research Fellowship Program, University of Washington, Seattle, WA, USA
- Department of Physics and Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA
| | - Matthias Florian
- Department of Electrical and Computer Engineering and Department of Physics, University of Michigan, Ann Arbor MI, USA
| | - Julian Klein
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Kseniia Mosina
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Prague, Czech Republic
| | - Zdenek Sofer
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Prague, Czech Republic
| | - Xiaodong Xu
- Department of Physics and Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA
| | - Akashdeep Kamra
- Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center, Universidad Autónoma de Madrid, Madrid, Spain
| | - Francisco J García-Vidal
- Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center, Universidad Autónoma de Madrid, Madrid, Spain
| | - Andrea Alù
- Department of Physics, The Graduate Center, City University of New York, New York, NY, USA.
- Photonics Initiative, CUNY Advanced Science Research Center, New York, NY, USA.
- Department of Electrical Engineering, City College of the City University of New York, New York, NY, USA.
| | - Vinod M Menon
- Department of Physics, City College of New York, New York, NY, USA.
- Department of Physics, The Graduate Center, City University of New York, New York, NY, USA.
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24
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Zong A, Zhang Q, Zhou F, Su Y, Hwangbo K, Shen X, Jiang Q, Liu H, Gage TE, Walko DA, Kozina ME, Luo D, Reid AH, Yang J, Park S, Lapidus SH, Chu JH, Arslan I, Wang X, Xiao D, Xu X, Gedik N, Wen H. Spin-mediated shear oscillators in a van der Waals antiferromagnet. Nature 2023; 620:988-993. [PMID: 37532936 DOI: 10.1038/s41586-023-06279-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 06/02/2023] [Indexed: 08/04/2023]
Abstract
Understanding how microscopic spin configuration gives rise to exotic properties at the macroscopic length scale has long been pursued in magnetic materials1-5. One seminal example is the Einstein-de Haas effect in ferromagnets1,6,7, in which angular momentum of spins can be converted into mechanical rotation of an entire object. However, for antiferromagnets without net magnetic moment, how spin ordering couples to macroscopic movement remains elusive. Here we observed a seesaw-like rotation of reciprocal lattice peaks of an antiferromagnetic nanolayer film, whose gigahertz structural resonance exhibits more than an order-of-magnitude amplification after cooling below the Néel temperature. Using a suite of ultrafast diffraction and microscopy techniques, we directly visualize this spin-driven rotation in reciprocal space at the nanoscale. This motion corresponds to interlayer shear in real space, in which individual micro-patches of the film behave as coherent oscillators that are phase-locked and shear along the same in-plane axis. Using time-resolved optical polarimetry, we further show that the enhanced mechanical response strongly correlates with ultrafast demagnetization, which releases elastic energy stored in local strain gradients to drive the oscillators. Our work not only offers the first microscopic view of spin-mediated mechanical motion of an antiferromagnet but it also identifies a new route towards realizing high-frequency resonators8,9 up to the millimetre band, so the capability of controlling magnetic states on the ultrafast timescale10-13 can be readily transferred to engineering the mechanical properties of nanodevices.
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Affiliation(s)
- Alfred Zong
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, USA
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Qi Zhang
- Department of Physics, University of Washington, Seattle, WA, USA
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, USA
- Department of Physics, Nanjing University, Nanjing, China
| | - Faran Zhou
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, USA
| | - Yifan Su
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Kyle Hwangbo
- Department of Physics, University of Washington, Seattle, WA, USA
| | - Xiaozhe Shen
- SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Qianni Jiang
- Department of Physics, University of Washington, Seattle, WA, USA
| | - Haihua Liu
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
| | - Thomas E Gage
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
| | - Donald A Walko
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, USA
| | | | - Duan Luo
- SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | | | - Jie Yang
- SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Suji Park
- SLAC National Accelerator Laboratory, Menlo Park, CA, USA
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA
| | - Saul H Lapidus
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, USA
| | - Jiun-Haw Chu
- Department of Physics, University of Washington, Seattle, WA, USA
| | - Ilke Arslan
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
| | - Xijie Wang
- SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Di Xiao
- Department of Physics, University of Washington, Seattle, WA, USA
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Xiaodong Xu
- Department of Physics, University of Washington, Seattle, WA, USA.
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA.
| | - Nuh Gedik
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA.
| | - Haidan Wen
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, USA.
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA.
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25
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Wang H, Wen Y, Zeng H, Xiong Z, Tu Y, Zhu H, Cheng R, Yin L, Jiang J, Zhai B, Liu C, Shan C, He J. 2D Ferroic Materials for Nonvolatile Memory Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2305044. [PMID: 37486859 DOI: 10.1002/adma.202305044] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/21/2023] [Indexed: 07/26/2023]
Abstract
The emerging nonvolatile memory technologies based on ferroic materials are promising for producing high-speed, low-power, and high-density memory in the field of integrated circuits. Long-range ferroic orders observed in 2D materials have triggered extensive research interest in 2D magnets, 2D ferroelectrics, 2D multiferroics, and their device applications. Devices based on 2D ferroic materials and heterostructures with an atomically smooth interface and ultrathin thickness have exhibited impressive properties and significant potential for developing advanced nonvolatile memory. In this context, a systematic review of emergent 2D ferroic materials is conducted here, emphasizing their recent research on nonvolatile memory applications, with a view to proposing brighter prospects for 2D magnetic materials, 2D ferroelectric materials, 2D multiferroic materials, and their relevant devices.
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Affiliation(s)
- Hao Wang
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Yao Wen
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Hui Zeng
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Ziren Xiong
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Yangyuan Tu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Hao Zhu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Ruiqing Cheng
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Lei Yin
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Jian Jiang
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Baoxing Zhai
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Chuansheng Liu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Chongxin Shan
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics, Zhengzhou University, Zhengzhou, 450052, China
| | - Jun He
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
- Hubei Luojia Laboratory, Wuhan, 430079, China
- Wuhan Institute of Quantum Technology, Wuhan, 430206, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100190, China
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26
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Shcherbakov A, Synnatschke K, Bodnar S, Zerhoch J, Eyre L, Rauh F, Heindl MW, Liu S, Konecny J, Sharp ID, Sofer Z, Backes C, Deschler F. Solution-Processed NiPS 3 Thin Films from Liquid Exfoliated Inks with Long-Lived Spin-Entangled Excitons. ACS NANO 2023. [PMID: 37220255 DOI: 10.1021/acsnano.3c01119] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Antiferromagnets are promising materials for future opto-spintronic applications since they show spin dynamics in the THz range and no net magnetization. Recently, layered van der Waals (vdW) antiferromagnets have been reported, which combine low-dimensional excitonic properties with complex spin-structure. While various methods for the fabrication of vdW 2D crystals exist, formation of large area and continuous thin films is challenging because of either limited scalability, synthetic complexity, or low opto-spintronic quality of the final material. Here, we fabricate centimeter-scale thin films of the van der Waals 2D antiferromagnetic material NiPS3, which we prepare using a crystal ink made from liquid phase exfoliation (LPE). We perform statistical atomic force microscopy (AFM) and scanning electron microscopy (SEM) to characterize and control the lateral size and number of layers through this ink-based fabrication. Using ultrafast optical spectroscopy at cryogenic temperatures, we resolve the dynamics of photoexcited excitons. We find antiferromagnetic spin arrangement and spin-entangled Zhang-Rice multiplet excitons with lifetimes in the nanosecond range, as well as ultranarrow emission line widths, despite the disordered nature of our films. Thus, our findings demonstrate scalable thin-film fabrication of high-quality NiPS3, which is crucial for translating this 2D antiferromagnetic material into spintronic and nanoscale memory devices and further exploring its complex spin-light coupled states.
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Affiliation(s)
- Andrii Shcherbakov
- Institute for Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
- Walter Schottky Institute and Physics Department, Technical University of Munich, Am Coulombwall 4, 85748 Garching by Munich, Germany
| | - Kevin Synnatschke
- School of Physics, Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
- Applied Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
| | - Stanislav Bodnar
- Institute for Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
- Walter Schottky Institute and Physics Department, Technical University of Munich, Am Coulombwall 4, 85748 Garching by Munich, Germany
| | - Jonathan Zerhoch
- Institute for Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
- Walter Schottky Institute and Physics Department, Technical University of Munich, Am Coulombwall 4, 85748 Garching by Munich, Germany
| | - Lissa Eyre
- Walter Schottky Institute and Physics Department, Technical University of Munich, Am Coulombwall 4, 85748 Garching by Munich, Germany
- Electrical Engineering Division, University of Cambridge, 9 JJ Thomson Ave, Cambridge CB3 0FA, United Kingdom
| | - Felix Rauh
- Walter Schottky Institute and Physics Department, Technical University of Munich, Am Coulombwall 4, 85748 Garching by Munich, Germany
| | - Markus W Heindl
- Institute for Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
- Walter Schottky Institute and Physics Department, Technical University of Munich, Am Coulombwall 4, 85748 Garching by Munich, Germany
| | - Shangpu Liu
- Institute for Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
- Walter Schottky Institute and Physics Department, Technical University of Munich, Am Coulombwall 4, 85748 Garching by Munich, Germany
| | - Jan Konecny
- Department of Inorganic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Ian D Sharp
- Walter Schottky Institute and Physics Department, Technical University of Munich, Am Coulombwall 4, 85748 Garching by Munich, Germany
| | - Zdeněk Sofer
- Department of Inorganic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Claudia Backes
- Applied Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
- Physical Chemistry of Nanomaterials, University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - Felix Deschler
- Institute for Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
- Walter Schottky Institute and Physics Department, Technical University of Munich, Am Coulombwall 4, 85748 Garching by Munich, Germany
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27
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Kim TJ, Jeong MY, Han MJ. First principles investigation of screened Coulomb interaction and electronic structure of low-temperature phase TaS 2. iScience 2023; 26:106681. [PMID: 37250339 PMCID: PMC10214477 DOI: 10.1016/j.isci.2023.106681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 03/28/2023] [Accepted: 04/12/2023] [Indexed: 05/31/2023] Open
Abstract
By means of ab initio computation schemes, we examine the electronic screening, Coulomb interaction strength, and the electronic structure of a quantum spin liquid candidate monolayer TaS2 in its low-temperature commensurate charge-density-wave phase. Not only local (U) but non-local (V) correlations are estimated within random phase approximation based on two different screening models. Using GW + EDMFT (GW plus extended dynamical mean-field theory) method, we investigate the detailed electronic structure by increasing the level of non-local approximation from DMFT (V=0) to EDMFT and GW + EDMFT.
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Affiliation(s)
- Taek Jung Kim
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Min Yong Jeong
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Myung Joon Han
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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28
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Kim DS, Huang D, Guo C, Li K, Rocca D, Gao FY, Choe J, Lujan D, Wu TH, Lin KH, Baldini E, Yang L, Sharma S, Kalaivanan R, Sankar R, Lee SF, Ping Y, Li X. Anisotropic Excitons Reveal Local Spin Chain Directions in a van der Waals Antiferromagnet. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2206585. [PMID: 36849168 DOI: 10.1002/adma.202206585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 12/28/2022] [Indexed: 05/12/2023]
Abstract
A long-standing pursuit in materials science is to identify suitable magnetic semiconductors for integrated information storage, processing, and transfer. Van der Waals magnets have brought forth new material candidates for this purpose. Recently, sharp exciton resonances in antiferromagnet NiPS3 have been reported to correlate with magnetic order, that is, the exciton photoluminescence intensity diminishes above the Néel temperature. Here, it is found that the polarization of maximal exciton emission rotates locally, revealing three possible spin chain directions. This discovery establishes a new understanding of the antiferromagnet order hidden in previous neutron scattering and optical experiments. Furthermore, defect-bound states are suggested as an alternative exciton formation mechanism that has yet to be explored in NiPS3 . The supporting evidence includes chemical analysis, excitation power, and thickness dependent photoluminescence and first-principles calculations. This mechanism for exciton formation is also consistent with the presence of strong phonon side bands. This study shows that anisotropic exciton photoluminescence can be used to read out local spin chain directions in antiferromagnets and realize multi-functional devices via spin-photon transduction.
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Affiliation(s)
- Dong Seob Kim
- Department of Physics and Center for Complex Quantum Systems, The University of Texas at Austin, Austin, TX, 78712, USA
- Center for Dynamics and Control of Materials and Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Di Huang
- Department of Physics and Center for Complex Quantum Systems, The University of Texas at Austin, Austin, TX, 78712, USA
- MOE Key Laboratory of Advanced Micro-Structured Materials, Shanghai Frontiers Science Center of Digital Optics, Institute of Precision Optical Engineering, and School of Physics Science and Engineering Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Chunhao Guo
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA, 95064, USA
| | - Kejun Li
- Department of Physics, University of California, Santa Cruz, CA, 95064, USA
| | - Dario Rocca
- Laboratoire de Physique et Chimie Théoriques (LPCT), Université de Lorraine, UMR 7019 CNRS, Nancy, F-54000, France
| | - Frank Y Gao
- Department of Physics and Center for Complex Quantum Systems, The University of Texas at Austin, Austin, TX, 78712, USA
- Center for Dynamics and Control of Materials and Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Jeongheon Choe
- Department of Physics and Center for Complex Quantum Systems, The University of Texas at Austin, Austin, TX, 78712, USA
- Center for Dynamics and Control of Materials and Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
| | - David Lujan
- Department of Physics and Center for Complex Quantum Systems, The University of Texas at Austin, Austin, TX, 78712, USA
- Center for Dynamics and Control of Materials and Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Ting-Hsuan Wu
- Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan
| | - Kung-Hsuan Lin
- Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan
| | - Edoardo Baldini
- Department of Physics and Center for Complex Quantum Systems, The University of Texas at Austin, Austin, TX, 78712, USA
- Center for Dynamics and Control of Materials and Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Li Yang
- Department of Physics and Institute of Materials Science and Engineering, Washington University, St. Louis, MO, 63130, USA
| | - Shivani Sharma
- Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan
| | - Raju Kalaivanan
- Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan
| | - Raman Sankar
- Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan
| | - Shang-Fan Lee
- Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan
| | - Yuan Ping
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA, 95064, USA
| | - Xiaoqin Li
- Department of Physics and Center for Complex Quantum Systems, The University of Texas at Austin, Austin, TX, 78712, USA
- Center for Dynamics and Control of Materials and Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
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29
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Liu C, Li Z, Hu J, Duan H, Wang C, Cai L, Feng S, Wang Y, Liu R, Hou D, Liu C, Zhang R, Zhu L, Niu Y, Zakharov AA, Sheng Z, Yan W. Probing the Néel-Type Antiferromagnetic Order and Coherent Magnon-Exciton Coupling in Van Der Waals VPS 3. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2300247. [PMID: 37071057 DOI: 10.1002/adma.202300247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 04/01/2023] [Indexed: 06/13/2023]
Abstract
2D van der Waals (vdW) antiferromagnets have received intensive attention due to their terahertz resonance, multilevel magnetic-order states, and ultrafast spin dynamics. However, accurately identifying their magnetic configuration still remains a challenge owing to the lack of net magnetization and insensitivity to external fields. In this work, the Néel-type antiferromagnetic (AFM) order in 2D antiferromagnet VPS3 with the out-of-plane anisotropy, which is demonstrated by the temperature-dependent spin-phonon coupling and second-harmonic generation (SHG), is experimentally probed. This long-range AFM order even persists at the ultrathin limit. Furthermore, strong interlayer exciton-magnon coupling (EMC) upon the Néel-type AFM order is detected based on the monolayer WSe2 /VPS3 heterostructure, which induces an enhanced excitonic state and further certifies the Néel-type AFM order of VPS3 . The discovery provides optical routes as the novel platform to study 2D antiferromagnets and promotes their potential applications in magneto-optics and opto-spintronic devices.
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Affiliation(s)
- Chaocheng Liu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, China
| | - Zhi Li
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, China
| | - Jiyu Hu
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, China
| | - Hengli Duan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, China
| | - Chao Wang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, China
| | - Liang Cai
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, China
| | - Sihua Feng
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, China
| | - Yao Wang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, China
| | - Ruiqi Liu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, China
| | - De Hou
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, 230031, China
| | - Caixing Liu
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, 230031, China
| | - Ranran Zhang
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, 230031, China
| | - Lin Zhu
- MAX IV Laboratory, Lund University, Lund, 22100, Sweden
| | - Yuran Niu
- MAX IV Laboratory, Lund University, Lund, 22100, Sweden
| | | | - Zhigao Sheng
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, 230031, China
| | - Wensheng Yan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, China
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30
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Kim J, Lee Y, Choi YW, Jung TS, Son S, Kim J, Choi HJ, Park JG, Kim JH. Terahertz Spectroscopy and DFT Analysis of Phonon Dynamics of the Layered Van der Waals Semiconductor Nb 3 X 8 ( X = Cl, I). ACS OMEGA 2023; 8:14190-14196. [PMID: 37091409 PMCID: PMC10116524 DOI: 10.1021/acsomega.3c01019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 03/28/2023] [Indexed: 05/03/2023]
Abstract
We have conducted a terahertz spectroscopic study and a density functional theory analysis of the phonon dynamics of the layered van der Waals semiconductors Nb3Cl8 and Nb3I8. Several infrared-active phonon modes were observed in the terahertz region, and their frequencies were found to be in excellent agreement with our first-principles lattice dynamics calculations. For Nb3Cl8, the observed phonon spectra are consistent with a structural transition at 90 K from the high-temperature P3̅m1 phase to the low-temperature R3̅m phase. Also, our study confirmed that the structural and magnetic transitions were coupled in Nb3Cl8. For Nb3I8, which is nonmagnetic at and below room temperature, no significant temperature or magnetic field dependence was observed in the phonon spectra. Our study provides an intriguing connection between the structural properties and the paramagnetic-nonmagnetic transitions in Nb3Cl8 and Nb3I8.
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Affiliation(s)
- Jangwon Kim
- Department
of Physics, Yonsei University, Seoul 03722, Republic of Korea
| | - Youjin Lee
- Center
for Quantum Materials, Seoul National University, Seoul 08826, Republic of Korea
- Department
of Physics and Astronomy & Institute of Applied Physics, Seoul National University, Seoul 08826, Republic
of Korea
| | - Young Woo Choi
- Department
of Physics, Yonsei University, Seoul 03722, Republic of Korea
| | - Taek Sun Jung
- Department
of Physics, Yonsei University, Seoul 03722, Republic of Korea
| | - Suhan Son
- Center
for Quantum Materials, Seoul National University, Seoul 08826, Republic of Korea
- Department
of Physics and Astronomy & Institute of Applied Physics, Seoul National University, Seoul 08826, Republic
of Korea
| | - Jonghyeon Kim
- Department
of Physics, Yonsei University, Seoul 03722, Republic of Korea
| | - Hyoung Joon Choi
- Department
of Physics, Yonsei University, Seoul 03722, Republic of Korea
| | - Je-Geun Park
- Center
for Quantum Materials, Seoul National University, Seoul 08826, Republic of Korea
- Department
of Physics and Astronomy & Institute of Applied Physics, Seoul National University, Seoul 08826, Republic
of Korea
| | - Jae Hoon Kim
- Department
of Physics, Yonsei University, Seoul 03722, Republic of Korea
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31
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Zhou J, Zhu C, Zhou Y, Dong J, Li P, Zhang Z, Wang Z, Lin YC, Shi J, Zhang R, Zheng Y, Yu H, Tang B, Liu F, Wang L, Liu L, Liu GB, Hu W, Gao Y, Yang H, Gao W, Lu L, Wang Y, Suenaga K, Liu G, Ding F, Yao Y, Liu Z. Composition and phase engineering of metal chalcogenides and phosphorous chalcogenides. NATURE MATERIALS 2023; 22:450-458. [PMID: 35739274 DOI: 10.1038/s41563-022-01291-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Two-dimensional (2D) materials with multiphase, multielement crystals such as transition metal chalcogenides (TMCs) (based on V, Cr, Mn, Fe, Cd, Pt and Pd) and transition metal phosphorous chalcogenides (TMPCs) offer a unique platform to explore novel physical phenomena. However, the synthesis of a single-phase/single-composition crystal of these 2D materials via chemical vapour deposition is still challenging. Here we unravel a competitive-chemical-reaction-based growth mechanism to manipulate the nucleation and growth rate. Based on the growth mechanism, 67 types of TMCs and TMPCs with a defined phase, controllable structure and tunable component can be realized. The ferromagnetism and superconductivity in FeXy can be tuned by the y value, such as superconductivity observed in FeX and ferromagnetism in FeS2 monolayers, demonstrating the high quality of as-grown 2D materials. This work paves the way for the multidisciplinary exploration of 2D TMPCs and TMCs with unique properties.
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Affiliation(s)
- Jiadong Zhou
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, China.
- Chongqing Center for Microelectronics and Microsystems, Beijing Institute of Technology, Chongqing, People's Republic of China.
| | - Chao Zhu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Collaborative Innovation Center for Micro/Nano Fabrication, Device and System, Southeast University, Nanjing, People's Republic of China
| | - Yao Zhou
- Advanced Research Institute of Multidisciplinary Science, and School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, People's Republic of China
| | - Jichen Dong
- Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan, Republic of Korea
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Peiling Li
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Zhaowei Zhang
- School of Physical and Mathematical Science, Nanyang Technological University, Singapore, Singapore
| | - Zhen Wang
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Yung-Chang Lin
- The Institute of Scientific and Industrial Research, Osaka University, Osaka, Japan
| | - Jia Shi
- Department of Chemistry, National University of Singapore, Singapore, Singapore
| | - Runwu Zhang
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, China
| | - Yanzhen Zheng
- Beijing Key Laboratory of Green Recovery and Extraction of Rare and Precious Metals, University of Science and Technology Beijing, Beijing, People's Republic of China
| | - Huimei Yu
- School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, People's Republic of China
| | - Bijun Tang
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Fucai Liu
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, People's Republic of China
| | - Lin Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), Nanjing, People's Republic of China
| | - Liwei Liu
- School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing, People's Republic of China
| | - Gui-Bin Liu
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, China
| | - Weida Hu
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Yanfeng Gao
- School of Materials Science and Engineering, Shanghai University, Shanghai, People's Republic of China
| | - Haitao Yang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Weibo Gao
- School of Physical and Mathematical Science, Nanyang Technological University, Singapore, Singapore
| | - Li Lu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
- Songshan Lake Materials Laboratory, Guangdong, China
| | - Yeliang Wang
- School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing, People's Republic of China.
| | - Kazu Suenaga
- The Institute of Scientific and Industrial Research, Osaka University, Osaka, Japan
| | - Guangtong Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
- Songshan Lake Materials Laboratory, Guangdong, China
| | - Feng Ding
- Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan, Republic of Korea
- School of Materials Science and Engineering, Ulsan National Institute of Science and Technology, Ulsan, Korea
| | - Yugui Yao
- Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing, China.
| | - Zheng Liu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore.
- CINTRA CNRS/NTU/THALES, Research Techno Plaza, Singapore, Singapore.
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore.
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32
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Yang W, Yang J, Shin HS. Phase- and composition-controlled synthesis. NATURE MATERIALS 2023; 22:421-422. [PMID: 35739275 DOI: 10.1038/s41563-022-01301-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- Weiguang Yang
- Department of Chemistry and Low-Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - Jieun Yang
- Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University, Seoul, Republic of Korea.
| | - Hyeon Suk Shin
- Department of Chemistry and Low-Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea.
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33
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Luo J, Li S, Ye Z, Xu R, Yan H, Zhang J, Ye G, Chen L, Hu D, Teng X, Smith WA, Yakobson BI, Dai P, Nevidomskyy AH, He R, Zhu H. Evidence for Topological Magnon-Phonon Hybridization in a 2D Antiferromagnet down to the Monolayer Limit. NANO LETTERS 2023; 23:2023-2030. [PMID: 36797055 DOI: 10.1021/acs.nanolett.3c00351] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Topological phonons and magnons potentially enable low-loss, quantum coherent, and chiral transport of information and energy at the atomic scale. Van der Waals magnetic materials are promising to realize such states due to their recently discovered strong interactions among the electronic, spin, and lattice degrees of freedom. Here, we report the first observation of coherent hybridization of magnons and phonons in monolayer antiferromagnet FePSe3 by cavity-enhanced magneto-Raman spectroscopy. The robust magnon-phonon cooperativity in the 2D limit occurs even in zero magnetic field, which enables nontrivial band inversion between longitudinal and transverse optical phonons caused by the strong coupling with magnons. The spin and lattice symmetry theoretically guarantee magnetic-field-controlled topological phase transition, verified by nonzero Chern numbers calculated from the coupled spin-lattice model. The 2D topological magnon-phonon hybridization potentially offers a new route toward quantum phononics and magnonics with an ultrasmall footprint.
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Affiliation(s)
- Jiaming Luo
- Department of Materials Science and Nano Engineering, Rice University, Houston, Texas 77005, United States
- Applied Physics Graduate Program, Rice University, Houston, Texas 77005, United States
| | - Shuyi Li
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
| | - Zhipeng Ye
- Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, Texas 79409, United States
| | - Rui Xu
- Department of Materials Science and Nano Engineering, Rice University, Houston, Texas 77005, United States
| | - Han Yan
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
| | - Junjie Zhang
- Department of Materials Science and Nano Engineering, Rice University, Houston, Texas 77005, United States
| | - Gaihua Ye
- Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, Texas 79409, United States
| | - Lebing Chen
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
| | - Ding Hu
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
| | - Xiaokun Teng
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
| | - William A Smith
- Department of Materials Science and Nano Engineering, Rice University, Houston, Texas 77005, United States
| | - Boris I Yakobson
- Department of Materials Science and Nano Engineering, Rice University, Houston, Texas 77005, United States
| | - Pengcheng Dai
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
| | - Andriy H Nevidomskyy
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
| | - Rui He
- Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, Texas 79409, United States
| | - Hanyu Zhu
- Department of Materials Science and Nano Engineering, Rice University, Houston, Texas 77005, United States
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34
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Matthiesen M, Hortensius JR, Mañas-Valero S, Kapon I, Dumcenco D, Giannini E, Šiškins M, Ivanov BA, van der Zant HSJ, Coronado E, Kuzmenko AB, Afanasiev D, Caviglia AD. Controlling Magnetism with Light in a Zero Orbital Angular Momentum Antiferromagnet. PHYSICAL REVIEW LETTERS 2023; 130:076702. [PMID: 36867817 DOI: 10.1103/physrevlett.130.076702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 11/17/2022] [Accepted: 12/21/2022] [Indexed: 06/18/2023]
Abstract
Antiferromagnetic materials feature intrinsic ultrafast spin dynamics, making them ideal candidates for future magnonic devices operating at THz frequencies. A major focus of current research is the investigation of optical methods for the efficient generation of coherent magnons in antiferromagnetic insulators. In magnetic lattices endowed with orbital angular momentum, spin-orbit coupling enables spin dynamics through the resonant excitation of low-energy electric dipoles such as phonons and orbital resonances which interact with spins. However, in magnetic systems with zero orbital angular momentum, microscopic pathways for the resonant and low-energy optical excitation of coherent spin dynamics are lacking. Here, we consider experimentally the relative merits of electronic and vibrational excitations for the optical control of zero orbital angular momentum magnets, focusing on a limit case: the antiferromagnet manganese phosphorous trisulfide (MnPS_{3}), constituted by orbital singlet Mn^{2+} ions. We study the correlation of spins with two types of excitations within its band gap: a bound electron orbital excitation from the singlet orbital ground state of Mn^{2+} into an orbital triplet state, which causes coherent spin precession, and a vibrational excitation of the crystal field that causes thermal spin disorder. Our findings cast orbital transitions as key targets for magnetic control in insulators constituted by magnetic centers of zero orbital angular momentum.
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Affiliation(s)
- Mattias Matthiesen
- Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, Netherlands
- DQMP-University of Geneva, École de Physique, 24, Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
| | - Jorrit R Hortensius
- Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, Netherlands
| | - Samuel Mañas-Valero
- Instituto de Ciencia Molecular (ICMol), Universitat de Valencia, Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - Itzik Kapon
- DQMP-University of Geneva, École de Physique, 24, Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
| | - Dumitru Dumcenco
- DQMP-University of Geneva, École de Physique, 24, Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
| | - Enrico Giannini
- DQMP-University of Geneva, École de Physique, 24, Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
| | - Makars Šiškins
- Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, Netherlands
| | - Boris A Ivanov
- Radboud University, Institute for Molecules and Materials, 6525 AJ Nijmegen, Netherlands
- Institute of Magnetism, National Academy of Sciences and Ministry of Education and Science, 03142 Kyiv, Ukraine
| | - Herre S J van der Zant
- Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, Netherlands
| | - Eugenio Coronado
- Instituto de Ciencia Molecular (ICMol), Universitat de Valencia, Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - Alexey B Kuzmenko
- DQMP-University of Geneva, École de Physique, 24, Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
| | - Dmytro Afanasiev
- Radboud University, Institute for Molecules and Materials, 6525 AJ Nijmegen, Netherlands
| | - Andrea D Caviglia
- DQMP-University of Geneva, École de Physique, 24, Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
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35
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Wu Y, Li J, Liu Y. Two-dimensional chalcogenide-based ferromagnetic semiconductors. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 35:083002. [PMID: 36540916 DOI: 10.1088/1361-648x/acaa7e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
Two-dimensional (2D) magnetic materials draw an enormous amount of attention due to their novel physical properties and potential spintronics device applications. Room-temperature ferromagnetic (FM) semiconductors have long been pursued in 2D magnetic materials, which show a long range magnetic order down to atomic-layer thickness. The intrinsic ferromagnetism has been predicted in a series of 2D materials and verified in experiments and the magnetism can be modulated by multiple physical fields, exhibiting promising application prospects. In this review, we overview several types of 2D chalcogenide-based FM semiconductors discovered in recent years. We summary and compare their basic physical properties, including the crystal structures, electronic structures, and mechanical stability. The 2D magnetism can be described by several physical models. We also focus on the recent progresses about theoretical prediction of FM semiconductors and experimental observation of external-field regulation. Most of investigations have shown that 2D chalcogenide-based FM semiconductors have relatively high Curie temperature (Tc) and structural stability. These materials are promising to realize the room-temperature ferromagnetism in atomic-layer thickness, which is significant to design spintronics devices.
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Affiliation(s)
- Yanling Wu
- State Key Laboratory of Metastable Materials Science and Technology & Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Jun Li
- State Key Laboratory of Metastable Materials Science and Technology & Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Yong Liu
- State Key Laboratory of Metastable Materials Science and Technology & Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, People's Republic of China
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36
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Jin Y, Jin Y, Li K, Yan M, Guo Y, Zhou Y, Preobrajenski A, Dedkov Y, Voloshina E. Mixed Insulating State for van der Waals CoPS 3. J Phys Chem Lett 2022; 13:10486-10493. [PMID: 36326647 DOI: 10.1021/acs.jpclett.2c02992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Large-scale high-quality van der Waals CoPS3 single crystals are synthesized using a chemical vapor transport (CVT) method. The crystallographic structure and electronic properties of this layered material are systematically studied using different spectroscopic methods (XPS, NEXAFS, and resonant photoelectron spectroscopy) accompanied by density functional theory (DFT) calculations. All experimental and theoretical data allow assignment of this material to the class of mixed Mott-Hubbard/charge-transfer insulator with Udd ≅ Δ. All obtained results can enrich the information on the new class of van der Waals materials, transition metal phosphorus trichalcogenides, and help to further effectively exploit their electronic, optical, and transport properties, which are important for adopting this kind of materials into different application areas, such as spintronics and catalysis.
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Affiliation(s)
- Yukun Jin
- Department of Physics, Shanghai University, Shangda Road 99, 200444Shanghai, China
| | - Yichen Jin
- Department of Physics, Shanghai University, Shangda Road 99, 200444Shanghai, China
| | - Kexin Li
- Department of Physics, Shanghai University, Shangda Road 99, 200444Shanghai, China
| | - Mouhui Yan
- Department of Physics, Shanghai University, Shangda Road 99, 200444Shanghai, China
- State Key Laboratory of Advanced Special Steel & School of Materials Science and Engineering, Shanghai University, 99 Shangda Road, 200444Shanghai, China
| | - Yefei Guo
- Department of Physics, Shanghai University, Shangda Road 99, 200444Shanghai, China
| | - Yong Zhou
- Department of Physics, Shanghai University, Shangda Road 99, 200444Shanghai, China
| | | | - Yuriy Dedkov
- Department of Physics, Shanghai University, Shangda Road 99, 200444Shanghai, China
- Materials Genome Institute, Shanghai University, Shangda Road 99, 200444Shanghai, China
| | - Elena Voloshina
- Department of Physics, Shanghai University, Shangda Road 99, 200444Shanghai, China
- Materials Genome Institute, Shanghai University, Shangda Road 99, 200444Shanghai, China
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37
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Zhou F, Hwangbo K, Zhang Q, Wang C, Shen L, Zhang J, Jiang Q, Zong A, Su Y, Zajac M, Ahn Y, Walko DA, Schaller RD, Chu JH, Gedik N, Xu X, Xiao D, Wen H. Dynamical criticality of spin-shear coupling in van der Waals antiferromagnets. Nat Commun 2022; 13:6598. [PMID: 36329063 PMCID: PMC9633802 DOI: 10.1038/s41467-022-34376-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022] Open
Abstract
The interplay between a multitude of electronic, spin, and lattice degrees of freedom underlies the complex phase diagrams of quantum materials. Layer stacking in van der Waals (vdW) heterostructures is responsible for exotic electronic and magnetic properties, which inspires stacking control of two-dimensional magnetism. Beyond the interplay between stacking order and interlayer magnetism, we discover a spin-shear coupling mechanism in which a subtle shear of the atomic layers can have a profound effect on the intralayer magnetic order in a family of vdW antiferromagnets. Using time-resolved X-ray diffraction and optical linear dichroism measurements, interlayer shear is identified as the primary structural degree of freedom that couples with magnetic order. The recovery times of both shear and magnetic order upon optical excitation diverge at the magnetic ordering temperature with the same critical exponent. The time-dependent Ginzburg-Landau theory shows that this concurrent critical slowing down arises from a linear coupling of the interlayer shear to the magnetic order, which is dictated by the broken mirror symmetry intrinsic to the monoclinic stacking. Our results highlight the importance of interlayer shear in ultrafast control of magnetic order via spin-mechanical coupling. Van der Waals materials are characterized by two dimensional layers weakly held together by interlayer van der Waals forces. Here, the authors study how shear motions between these layers influence the magnetic properties of the van der Waals antiferromagnets FePS3, MnPS3, and NiPS3. ‘
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Affiliation(s)
- Faran Zhou
- X-ray Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - Kyle Hwangbo
- Department of Physics, University of Washington, Seattle, WA, USA
| | - Qi Zhang
- X-ray Science Division, Argonne National Laboratory, Lemont, IL, USA.,Department of Physics, University of Washington, Seattle, WA, USA.,Department of Physics, Nanjing University, Nanjing, China
| | - Chong Wang
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA
| | - Lingnan Shen
- Department of Physics, University of Washington, Seattle, WA, USA
| | - Jiawei Zhang
- X-ray Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - Qianni Jiang
- Department of Physics, University of Washington, Seattle, WA, USA
| | - Alfred Zong
- Department of Chemistry, University of California Berkeley, Berkeley, CA, USA
| | - Yifan Su
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Marc Zajac
- X-ray Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - Youngjun Ahn
- X-ray Science Division, Argonne National Laboratory, Lemont, IL, USA.,Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Donald A Walko
- X-ray Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - Richard D Schaller
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
| | - Jiun-Haw Chu
- Department of Physics, University of Washington, Seattle, WA, USA
| | - Nuh Gedik
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Xiaodong Xu
- Department of Physics, University of Washington, Seattle, WA, USA.,Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA
| | - Di Xiao
- Department of Physics, University of Washington, Seattle, WA, USA.,Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA
| | - Haidan Wen
- X-ray Science Division, Argonne National Laboratory, Lemont, IL, USA. .,Materials Science Division, Argonne National Laboratory, Lemont, IL, USA.
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38
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Dirnberger F, Bushati R, Datta B, Kumar A, MacDonald AH, Baldini E, Menon VM. Spin-correlated exciton-polaritons in a van der Waals magnet. NATURE NANOTECHNOLOGY 2022; 17:1060-1064. [PMID: 36097046 DOI: 10.1038/s41565-022-01204-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Strong coupling between light and elementary excitations is emerging as a powerful tool to engineer the properties of solid-state systems. Spin-correlated excitations that couple strongly to optical cavities promise control over collective quantum phenomena such as magnetic phase transitions, but their suitable electronic resonances are yet to be found. Here, we report strong light-matter coupling in NiPS3, a van der Waals antiferromagnet with highly correlated electronic degrees of freedom. A previously unobserved class of polaritonic quasiparticles emerges from the strong coupling between its spin-correlated excitons and the photons inside a microcavity. Detailed spectroscopic analysis in conjunction with a microscopic theory provides unique insights into the origin and interactions of these exotic magnetically coupled excitations. Our work introduces van der Waals magnets to the field of strong light-matter physics and provides a path towards the design and control of correlated electron systems via cavity quantum electrodynamics.
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Affiliation(s)
| | - Rezlind Bushati
- Department of Physics, City College of New York, New York, NY, USA
- Department of Physics, The Graduate Center, City University of New York, New York, NY, USA
| | - Biswajit Datta
- Department of Physics, City College of New York, New York, NY, USA
| | - Ajesh Kumar
- Department of Physics, University of Texas at Austin, Austin, TX, USA
| | - Allan H MacDonald
- Department of Physics, University of Texas at Austin, Austin, TX, USA
| | - Edoardo Baldini
- Department of Physics, University of Texas at Austin, Austin, TX, USA.
| | - Vinod M Menon
- Department of Physics, City College of New York, New York, NY, USA.
- Department of Physics, The Graduate Center, City University of New York, New York, NY, USA.
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39
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Exciton-coupled coherent magnons in a 2D semiconductor. Nature 2022; 609:282-286. [PMID: 36071189 DOI: 10.1038/s41586-022-05024-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 06/24/2022] [Indexed: 11/08/2022]
Abstract
The recent discoveries of two-dimensional (2D) magnets1-6 and their stacking into van der Waals structures7-11 have expanded the horizon of 2D phenomena. One exciting application is to exploit coherent magnons12 as energy-efficient information carriers in spintronics and magnonics13,14 or as interconnects in hybrid quantum systems15-17. A particular opportunity arises when a 2D magnet is also a semiconductor, as reported recently for CrSBr (refs. 18-20) and NiPS3 (refs. 21-23) that feature both tightly bound excitons with a large oscillator strength and potentially long-lived coherent magnons owing to the bandgap and spatial confinement. Although magnons and excitons are energetically mismatched by orders of magnitude, their coupling can lead to efficient optical access to spin information. Here we report strong magnon-exciton coupling in the 2D A-type antiferromagnetic semiconductor CrSBr. Coherent magnons launched by above-gap excitation modulate the exciton energies. Time-resolved exciton sensing reveals magnons that can coherently travel beyond seven micrometres, with a coherence time of above five nanoseconds. We observe these exciton-coupled coherent magnons in both even and odd numbers of layers, with and without compensated magnetization, down to the bilayer limit. Given the versatility of van der Waals heterostructures, these coherent 2D magnons may be a basis for optically accessible spintronics, magnonics and quantum interconnects.
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40
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Ramos M, Marques-Moros F, Esteras DL, Mañas-Valero S, Henríquez-Guerra E, Gadea M, Baldoví JJ, Canet-Ferrer J, Coronado E, Calvo MR. Photoluminescence Enhancement by Band Alignment Engineering in MoS 2/FePS 3 van der Waals Heterostructures. ACS APPLIED MATERIALS & INTERFACES 2022; 14:33482-33490. [PMID: 35839147 PMCID: PMC9335528 DOI: 10.1021/acsami.2c05464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 07/04/2022] [Indexed: 05/08/2023]
Abstract
Single-layer semiconducting transition metal dichalcogenides (2H-TMDs) display robust excitonic photoluminescence emission, which can be improved by controlled changes to the environment and the chemical potential of the material. However, a drastic emission quench has been generally observed when TMDs are stacked in van der Waals heterostructures, which often favor the nonradiative recombination of photocarriers. Herein, we achieve an enhancement of the photoluminescence of single-layer MoS2 on top of van der Waals FePS3. The optimal energy band alignment of this heterostructure preserves light emission of MoS2 against nonradiative interlayer recombination processes and favors the charge transfer from MoS2, an n-type semiconductor, to FePS3, a p-type narrow-gap semiconductor. The strong depletion of carriers in the MoS2 layer is evidenced by a dramatic increase in the spectral weight of neutral excitons, which is strongly modulated by the thickness of the FePS3 underneath, leading to the increase of photoluminescence intensity. The present results demonstrate the potential for the rational design of van der Waals heterostructures with advanced optoelectronic properties.
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Affiliation(s)
- Maria Ramos
- Departamento
de Física Aplicada, Universidad de
Alicante, Alicante 03690, Spain
| | | | - Dorye L. Esteras
- Instituto
de Ciencia Molecular (ICMol), Universitat
de València, Paterna 46980, Spain
| | - Samuel Mañas-Valero
- Instituto
de Ciencia Molecular (ICMol), Universitat
de València, Paterna 46980, Spain
| | | | - Marcos Gadea
- Departamento
de Física Aplicada, Universidad de
Alicante, Alicante 03690, Spain
| | - José J. Baldoví
- Instituto
de Ciencia Molecular (ICMol), Universitat
de València, Paterna 46980, Spain
| | - Josep Canet-Ferrer
- Instituto
de Ciencia Molecular (ICMol), Universitat
de València, Paterna 46980, Spain
| | - Eugenio Coronado
- Instituto
de Ciencia Molecular (ICMol), Universitat
de València, Paterna 46980, Spain
| | - M. Reyes Calvo
- Departamento
de Física Aplicada, Universidad de
Alicante, Alicante 03690, Spain
- Instituto
Universitario de Materiales de Alicante (IUMA), Universidad de Alicante, Alicante 03690, Spain
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41
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Zhou L, Huang J, Windgaetter L, Ong CS, Zhao X, Zhang C, Tang M, Li Z, Qiu C, Latini S, Lu Y, Wu D, Gou H, Wee ATS, Hosono H, Louie SG, Tang P, Rubio A, Yuan H. Unconventional excitonic states with phonon sidebands in layered silicon diphosphide. NATURE MATERIALS 2022; 21:773-778. [PMID: 35710630 PMCID: PMC9242852 DOI: 10.1038/s41563-022-01285-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Complex correlated states emerging from many-body interactions between quasiparticles (electrons, excitons and phonons) are at the core of condensed matter physics and material science. In low-dimensional materials, quantum confinement affects the electronic, and subsequently, optical properties for these correlated states. Here, by combining photoluminescence, optical reflection measurements and ab initio theoretical calculations, we demonstrate an unconventional excitonic state and its bound phonon sideband in layered silicon diphosphide (SiP2), where the bound electron-hole pair is composed of electrons confined within one-dimensional phosphorus-phosphorus chains and holes extended in two-dimensional SiP2 layers. The excitonic state and emergent phonon sideband show linear dichroism and large energy redshifts with increasing temperature. Our ab initio many-body calculations confirm that the observed phonon sideband results from the correlated interaction between excitons and optical phonons. With these results, we propose layered SiP2 as a platform for the study of excitonic physics and many-particle effects.
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Grants
- L.W. acknowledges funding by the Deutsche Forschungsgemeinschaft (DFG) under Germany’s Excellence Strategy - Cluster of Excellence Advanced Imaging of Matter (AIM) EXC 2056 - 390715994 and by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)–SFB-925–project 170620586.
- C.S.O. acknowledge support by National Science Foundation Grant No. DMR-1926004 and National Science Foundation Grant No. OAC-2103991.
- X.X.Z. acknowledge support from MOE Tier 2 grant MOE2017-T2-2-139 and the support from the Presidential Postdoctoral Fellowship, NTU, Singapore via grant 03INS000973C150.
- Y.F.L. acknowledge the support by Grant-in-Aid for Young Scientists (Japan Society for the Promotion of Science, JSPS) No. 21K14494.
- A.T.S.W acknowledge support from MOE Tier 2 grant MOE2017-T2-2-139.
- S.G.L. acknowledge support by National Science Foundation Grant No. DMR-1926004 and National Science Foundation Grant No. OAC-2103991.
- P.Z.T. acknowledges the support from the Fundamental Research Funds for the Central Universities (ZG216S20A1) and the 111 Project (B17002). Part of the calculations were supported by the high-performance computing (HPC) resources at Beihang University.
- A.R. acknowledges the support from the European Research Council (ERC-2015-AdG-694097), Grupos Consolidados (IT1249-19), and the Max Planck-New York City Center for Non-Equilibrium Quantum Phenomena. The Flatiron Institute is a division of the Simons Foundation.
- This research was supported by the National Key Basic Research Program of the Ministry of Science and Technology of China (2018YFA0306200, 2021YFA1202901), the National Natural Science Foundation of China (52072168, 51861145201, 91750101, 21733001), the Fundamental Research Funds for the Central Universities (021314380078, 021314380104, 021314380147) and Jiangsu Key Laboratory of Artificial Functional Materials.
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Affiliation(s)
- Ling Zhou
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
| | - Junwei Huang
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
| | - Lukas Windgaetter
- Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science, Hamburg, Germany
| | - Chin Shen Ong
- Department of Physics, University of California, Berkeley, CA, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Xiaoxu Zhao
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Caorong Zhang
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
| | - Ming Tang
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
| | - Zeya Li
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
| | - Caiyu Qiu
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
| | - Simone Latini
- Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science, Hamburg, Germany
| | - Yangfan Lu
- Materials Research Center for Element Strategy, Tokyo Institute of Technology, Yokohama, Japan
- College of Materials Science and Engineering, National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, China
| | - Di Wu
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
| | - Huiyang Gou
- Center for High Pressure Science and Technology Advanced Research, Beijing, China
| | - Andrew T S Wee
- Department of Physics, National University of Singapore, Singapore, Singapore
| | - Hideo Hosono
- Materials Research Center for Element Strategy, Tokyo Institute of Technology, Yokohama, Japan
| | - Steven G Louie
- Department of Physics, University of California, Berkeley, CA, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Peizhe Tang
- Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science, Hamburg, Germany.
- School of Materials Science and Engineering, Beihang University, Beijing, China.
| | - Angel Rubio
- Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science, Hamburg, Germany.
- Center for Computational Quantum Physics, Simons Foundation, Flatiron Institute, New York, NY, USA.
| | - Hongtao Yuan
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China.
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42
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Xiao F, Tong Q. Tunable Strong Magnetic Anisotropy in Two-Dimensional van der Waals Antiferromagnets. NANO LETTERS 2022; 22:3946-3952. [PMID: 35549241 DOI: 10.1021/acs.nanolett.2c00401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We show that the anisotropic energy of a 2D antiferromagnet is greatly enhanced via stacking on a magnetic substrate layer, arising from the sublattice-dependent interlayer magnetic interaction that defines an effective anisotropic energy. Interestingly, this effective energy couples strongly with the interlayer stacking order and the magnetic order of the substrate layer, providing unique mechanical and magnetic means to control the antiferromagnetic order. These two types of control methods distinctly affect the sublattice magnetization dynamics, with a change in the ratio of sublattice precession amplitudes in the former and its chirality in the latter. In moiré superlattices formed by a relative twist or strain between the layers, the coupling with stacking order introduces a landscape of effective anisotropic energy across the moiré, which can be utilized to create nonuniform antiferromagnetic textures featuring periodically localized low-energy magnons.
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Affiliation(s)
- Feiping Xiao
- School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Qingjun Tong
- School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
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43
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Wang P, Wu D, Zhang K, Wu X. Two-Dimensional Quaternary Transition Metal Sulfide CrMoA 2S 6 (A = C, Si, or Ge): A Bipolar Antiferromagnetic Semiconductor with a High Néel Temperature. J Phys Chem Lett 2022; 13:3850-3856. [PMID: 35467873 DOI: 10.1021/acs.jpclett.2c00836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Bipolar antiferromagnetic semiconductors (BAFSs) make up a class of spintronic materials, holding great promise for the manipulation of spin-polarized currents simply upon application of a voltage gate, but only a few two-dimensional (2D) BAFSs with a high Néel temperature (TN) have been reported. Here, we report a family of magnetic quaternary MM'A2S6 (M = V, Cr, Mn, or Fe; M' = Nb, Mo, Tc, or Ru; A = C, Si, Ge, or Sn) nanosheets by isovalent alloying layered transitional metal trisulfides (MAS3) based on first-principles calculations. Our results show that 2D CrMoA2S6 (A = C, Si, or Ge) nanosheets are BAFSs with band gaps ranging from 1.89 to 2.23 eV. Among them, 2D CrMoC2S6 has the highest TN of 556 K with robust magnetism against carrier doping and external in-plane strain due to a strong delocalization superexchange interaction between the Cr3+ and Mo3+ cations. This study establishes that CrMoC2S6 is an ideal prototype platform for realizing electric control of spin polarization in 2D materials.
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Affiliation(s)
- Peng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Sciences, CAS Key Laboratory of Materials for Energy Conversion, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Daoxiong Wu
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Sciences, CAS Key Laboratory of Materials for Energy Conversion, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230026, China
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Kai Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Sciences, CAS Key Laboratory of Materials for Energy Conversion, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaojun Wu
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Sciences, CAS Key Laboratory of Materials for Energy Conversion, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230026, China
- Synergetic Innovation of Quantum Information & Quantum Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
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44
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Zhang Y, Kim H, Zhang W, Watanabe K, Taniguchi T, Gao Y, Maruyama M, Okada S, Shinokita K, Matsuda K. Magnon-Coupled Intralayer Moiré Trion in Monolayer Semiconductor-Antiferromagnet Heterostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2200301. [PMID: 35233833 DOI: 10.1002/adma.202200301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Moiré fringe patterns created by stacking different 2D layered materials as artificial van der Waals (vdW) heterostructures have become a novel platform to study and engineer optically generated excitonic properties. The moiré patterns contribute to the formation of spatially ordered excitonic states (excitons and trions), which can be used in the quantum simulation of many-body systems and ensembles of coherent quantum light emitters. The intriguing moiré excitonic properties are affected by and controlled via the interaction with magnetic elements. Here, a moiré excitonic system interacting with the magnetic elementary excitation of antiferromagnetic orders in MoSe2 /MnPS3 vdW heterostructures is reported. The low-temperature photoluminescence spectra with additional fine spectral structures on the low-energy side, which are coupled magnon-trion peaks below the Néel temperature of MnPS3 , are carefully investigated. The fine spectral structures with long lifetime and coherence time are assigned to intralayer trion-magnon complexes trapped in the moiré potentials (moiré trion-magnon complexes). These findings highlight the emergence of moiré trion-magnon complexes and provide a new way to explore novel quantum phenomena in moiré excitonic systems with magnetic functionalities.
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Affiliation(s)
- Yan Zhang
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto, 611-0011, Japan
| | - Heejun Kim
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto, 611-0011, Japan
| | - Wenjin Zhang
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto, 611-0011, Japan
| | - Kenji Watanabe
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Takashi Taniguchi
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Yanlin Gao
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Mina Maruyama
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Susumu Okada
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Keisuke Shinokita
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto, 611-0011, Japan
| | - Kazunari Matsuda
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto, 611-0011, Japan
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45
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Yang W, Xin K, Yang J, Xu Q, Shan C, Wei Z. 2D Ultrawide Bandgap Semiconductors: Odyssey and Challenges. SMALL METHODS 2022; 6:e2101348. [PMID: 35277948 DOI: 10.1002/smtd.202101348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 02/11/2022] [Indexed: 06/14/2023]
Abstract
2D ultrawide bandgap (UWBG) semiconductors have aroused increasing interest in the field of high-power transparent electronic devices, deep-ultraviolet photodetectors, flexible electronic skins, and energy-efficient displays, owing to their intriguing physical properties. Compared with dominant narrow bandgap semiconductor material families, 2D UWBG semiconductors are less investigated but stand out because of their propensity for high optical transparency, tunable electrical conductivity, high mobility, and ultrahigh gate dielectrics. At the current stage of research, the most intensively investigated 2D UWBG semiconductors are metal oxides, metal chalcogenides, metal halides, and metal nitrides. This paper provides an up-to-date review of recent research progress on new 2D UWBG semiconductor materials and novel physical properties. The widespread applications, i.e., transistors, photodetector, touch screen, and inverter are summarized, which employ 2D UWBG semiconductors as either a passive or active layer. Finally, the existing challenges and opportunities of the enticing class of 2D UWBG semiconductors are highlighted.
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Affiliation(s)
- Wen Yang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450052, China
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
| | - Kaiyao Xin
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
| | - Juehan Yang
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
| | - Qun Xu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450052, China
| | - Chongxin Shan
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key laboratory of Materials Physics, Ministry of Education, and School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, 450052, China
| | - Zhongming Wei
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
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Wang R, Huang J, Zhang X, Han J, Zhang Z, Gao T, Xu L, Liu S, Xu P, Song B. Two-Dimensional High-Entropy Metal Phosphorus Trichalcogenides for Enhanced Hydrogen Evolution Reaction. ACS NANO 2022; 16:3593-3603. [PMID: 35212217 DOI: 10.1021/acsnano.2c01064] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Developing earth-abundant and highly effective electrocatalysts for hydrogen evolution reaction (HER) is a prerequisite for the upcoming hydrogen energy society. Two-dimensional (2D) high-entropy metal phosphorus trichalcogenides (MPCh3) have the advantages of both near-continuous adsorption energies of high-entropy alloys (HEAs) and large specific surface area of 2D materials, which are excellent catalytic platforms. As a typical 2D high-entropy catalyst, Co0.6(VMnNiZn)0.4PS3 nanosheets with high-concentration active sites are successfully demonstrated to show enhanced HER performance: an overpotential of 65.9 mV at a current density of 10 mA cm-2 and a Tafel slope of 65.5 mV dec-1. Decent spectroscopy characterizations are combined with density function theory analyses to show the scenario for the enhancement mechanism by a high-entropy strategy. The optimized S sites on the edge and P sites on the basal plane provide more active sites for hydrogen adsorption, and the introduced Mn sites boost water dissociation during the Volmer step. Two-dimensional high-entropy MPCh3 provides an avenue for the combination of HEAs and 2D materials to enhance the HER performance, which also provides an alternative materials platform to explore and design superior catalysts for various electrochemical systems.
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Affiliation(s)
- Ran Wang
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin150001, China
| | - Jinzhen Huang
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin150001, China
| | - Xinghong Zhang
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin150001, China
| | - Jiecai Han
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin150001, China
| | - Zhihua Zhang
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian116028, China
| | - Tangling Gao
- Institute of Petrochemistry, Heilongjiang Academy of Sciences, Harbin150040, China
| | - Lingling Xu
- Key Laboratory of Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin150080, China
| | - Shengwei Liu
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou510006, China
| | - Ping Xu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin150001, China
| | - Bo Song
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin150001, China
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Son S, Lee Y, Kim JH, Kim BH, Kim C, Na W, Ju H, Park S, Nag A, Zhou KJ, Son YW, Kim H, Noh WS, Park JH, Lee JS, Cheong H, Kim JH, Park JG. Multiferroic-Enabled Magnetic-Excitons in 2D Quantum-Entangled Van der Waals Antiferromagnet NiI 2. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2109144. [PMID: 34936713 DOI: 10.1002/adma.202109144] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/09/2021] [Indexed: 06/14/2023]
Abstract
Matter-light interaction is at the center of diverse research fields from quantum optics to condensed matter physics, opening new fields like laser physics. A magnetic exciton is one such rare example found in magnetic insulators. However, it is relatively rare to observe that external variables control matter-light interaction. Here, it is reported that the broken inversion symmetry of multiferroicity can act as an external knob enabling magnetic excitons in the van der Waals antiferromagnet NiI2 . It is further discovered that this magnetic exciton arises from a transition between Zhang-Rice-triplet and Zhang-Rice-singlet fundamentally quantum-entangled states. This quantum entanglement produces an ultrasharp optical exciton peak at 1.384 eV with a 5 meV linewidth. The work demonstrates that NiI2 is 2D magnetically ordered with an intrinsically quantum-entangled ground state.
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Affiliation(s)
- Suhan Son
- Center for Quantum Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Youjin Lee
- Center for Quantum Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jae Ha Kim
- Department of Physics, Yonsei University, Seoul, 03722, Republic of Korea
| | - Beom Hyun Kim
- School of Computational Sciences, Korea Institute for Advanced Study, Seoul, 02455, Republic of Korea
| | - Chaebin Kim
- Center for Quantum Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Woongki Na
- Department of Physics, Sogang University, Seoul, 04107, Republic of Korea
| | - Hwiin Ju
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Sudong Park
- Department of Physics, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
- MPPHC-CPM, Max Planck POSTECH/Korea Research Initiative, Pohang, 37673, Republic of Korea
| | - Abhishek Nag
- Diamond Light Source, Harwell Campus, Didcot, OX11 0DE, United Kingdom
| | - Ke-Jin Zhou
- Diamond Light Source, Harwell Campus, Didcot, OX11 0DE, United Kingdom
| | - Young-Woo Son
- School of Computational Sciences, Korea Institute for Advanced Study, Seoul, 02455, Republic of Korea
| | - Hyeongdo Kim
- XFEL Beamline Division, Pohang Accelerator Laboratory, Pohang, 37673, Republic of Korea
| | - Woo-Suk Noh
- MPPHC-CPM, Max Planck POSTECH/Korea Research Initiative, Pohang, 37673, Republic of Korea
| | - Jae-Hoon Park
- Department of Physics, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
- MPPHC-CPM, Max Planck POSTECH/Korea Research Initiative, Pohang, 37673, Republic of Korea
| | - Jong Seok Lee
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Hyeonsik Cheong
- Department of Physics, Sogang University, Seoul, 04107, Republic of Korea
| | - Jae Hoon Kim
- Department of Physics, Yonsei University, Seoul, 03722, Republic of Korea
| | - Je-Geun Park
- Center for Quantum Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul, 08826, Republic of Korea
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48
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Zhou KJ, Walters A, Garcia-Fernandez M, Rice T, Hand M, Nag A, Li J, Agrestini S, Garland P, Wang H, Alcock S, Nistea I, Nutter B, Rubies N, Knap G, Gaughran M, Yuan F, Chang P, Emmins J, Howell G. I21: an advanced high-resolution resonant inelastic X-ray scattering beamline at Diamond Light Source. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:563-580. [PMID: 35254322 PMCID: PMC8900866 DOI: 10.1107/s1600577522000601] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 01/17/2022] [Indexed: 05/27/2023]
Abstract
The I21 beamline at Diamond Light Source is dedicated to advanced resonant inelastic X-ray scattering (RIXS) for probing charge, orbital, spin and lattice excitations in materials across condensed matter physics, applied sciences and chemistry. Both the beamline and the RIXS spectrometer employ divergent variable-line-spacing gratings covering a broad energy range of 280-3000 eV. A combined energy resolution of ∼35 meV (16 meV) is readily achieved at 930 eV (530 eV) owing to the optimized optics and the mechanics. Considerable efforts have been paid to the design of the entire beamline, particularly the implementation of the collection mirrors, to maximize the X-ray photon throughput. The continuous rotation of the spectrometer over 150° under ultra high vacuum and a cryogenic manipulator with six degrees of freedom allow accurate mappings of low-energy excitations from solid state materials in momentum space. Most importantly, the facility features a unique combination of the high energy resolution and the high photon throughput vital for advanced RIXS applications. Together with its stability and user friendliness, I21 has become one of the most sought after RIXS beamlines in the world.
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Affiliation(s)
- Ke-Jin Zhou
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Andrew Walters
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | | | - Thomas Rice
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Matthew Hand
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Abhishek Nag
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Jiemin Li
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Stefano Agrestini
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Peter Garland
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Hongchang Wang
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Simon Alcock
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Ioana Nistea
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Brian Nutter
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Nicholas Rubies
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Giles Knap
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Martin Gaughran
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Fajin Yuan
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - Peter Chang
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - John Emmins
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
| | - George Howell
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom
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Petkov V, Ren Y. Critical cation-anion radius ratio and two-dimensional antiferromagnetism in van der Waals TMPS 3(TM = Mn, Fe, Ni). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:175404. [PMID: 35130524 DOI: 10.1088/1361-648x/ac527a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Two-dimensional TMPS3antiferromagnets, transition metal (TM) = Mn, Fe, Ni, are studied by high-energy x-ray diffraction and atomic pair distribution analysis over a broad temperature range. Results show that the compounds exhibit common average but distinct local atomic structure, including distinct distortions of the constituent TM-S octahedra, magnitude and direction of atomic displacements, TM-TM distances and TM-S-TM bond angles. The differences in the local structure may be rationalized in terms of the Pauling's rule for the critical ratio of TM2+cation and S2-anion radii for octahedral coordination. We argue that the observed differences in the local structure are behind the differences in the antiferromagnetic properties of TMPS3compounds, including different magnetic anisotropy and Neel temperature.
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Affiliation(s)
- Valeri Petkov
- Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48858, United States of America
| | - Yang Ren
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States of America
- Department of Physics, City University of Hong Kong, Kowloon, Hong Kong, People's Republic of China
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50
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Abstract
Excitonic insulators are usually considered to form via the condensation of a soft charge mode of bound electron-hole pairs. This, however, presumes that the soft exciton is of spin-singlet character. Early theoretical considerations have also predicted a very distinct scenario, in which the condensation of magnetic excitons results in an antiferromagnetic excitonic insulator state. Here we report resonant inelastic x-ray scattering (RIXS) measurements of Sr3Ir2O7. By isolating the longitudinal component of the spectra, we identify a magnetic mode that is well-defined at the magnetic and structural Brillouin zone centers, but which merges with the electronic continuum in between these high symmetry points and which decays upon heating concurrent with a decrease in the material’s resistivity. We show that a bilayer Hubbard model, in which electron-hole pairs are bound by exchange interactions, consistently explains all the electronic and magnetic properties of Sr3Ir2O7 indicating that this material is a realization of the long-predicted antiferromagnetic excitonic insulator phase. Antiferromagnetic excitonic insulators are a distinct form of excitonic insulator, in which electrons and holes are bound by magnetic exchange rather than Coulomb attraction. Here, Mazzone et al. show, using X-ray scattering, that Sr3Ir2O7 realizes this particular state.
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