1
|
Mudgal M, Meena P, Tiwari VK, Yenugonda V, Malik VK, Buck J, Rossnagel K, Mahatha SK, Nayak J. Magnetotransport and angle-resolved photoemission spectroscopy of MnSb 12Te 19: a new member of MnSb2nTe3n+1family. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:50LT01. [PMID: 39241799 DOI: 10.1088/1361-648x/ad7806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2024] [Accepted: 09/06/2024] [Indexed: 09/09/2024]
Abstract
The quest for intrinsically ferromagnetic topological materials is a focal point in the study of topological phases of matter, as intrinsic ferromagnetism plays a vital role in realizing exotic properties such as the anomalous Hall effect (AHE) in quasi-two-dimensional materials, and this stands out as one of the most pressing concerns within the field. Here, we investigate a novel higher order member of the MnSb2nTe3n+1family, MnSb12Te19, for the first time combining magnetotransport and angle-resolved photoemission spectroscopy (ARPES) measurements. Our magnetic susceptibility experiments identify ferromagnetic transitions at temperatureTc= 18.7 K, consistent with our heat capacity measurements (T= 18.8 K). The AHE is observed for the field along thec-axis belowTc. Our study of Shubinikov-de-Haas oscillations provides evidence for Dirac fermions withπBerry phase. Our comprehensive investigation reveals that MnSb12Te19exhibits a FM ground state along with AHE, and hole-dominated transport properties consistent with ARPES measurements.
Collapse
Affiliation(s)
- Mohit Mudgal
- Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Priyanka Meena
- Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Vishnu Kumar Tiwari
- Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Venkateswara Yenugonda
- Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208016, India
- Department of Physics, SUNY Buffalo State University, Buffalo, NY 14222, United States of America
| | - Vivek Kumar Malik
- Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Jens Buck
- Ruprecht Haensel Laboratory, Deutsches Elektronen-Synchrotron, DESY, Notkestr. 85, Hamburg, 22607, Germany
- Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Olshausenstr. 40, 24098 Kiel, Germany
| | - Kai Rossnagel
- Ruprecht Haensel Laboratory, Deutsches Elektronen-Synchrotron, DESY, Notkestr. 85, Hamburg, 22607, Germany
- Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Olshausenstr. 40, 24098 Kiel, Germany
| | - Sanjoy Kr Mahatha
- UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore 452001, India
| | - Jayita Nayak
- Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208016, India
| |
Collapse
|
2
|
Tzschaschel C, Qiu JX, Gao XJ, Li HC, Guo C, Yang HY, Zhang CP, Xie YM, Liu YF, Gao A, Bérubé D, Dinh T, Ho SC, Fang Y, Huang F, Nordlander J, Ma Q, Tafti F, Moll PJW, Law KT, Xu SY. Nonlinear optical diode effect in a magnetic Weyl semimetal. Nat Commun 2024; 15:3017. [PMID: 38589414 PMCID: PMC11271640 DOI: 10.1038/s41467-024-47291-8] [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: 07/19/2023] [Accepted: 03/27/2024] [Indexed: 04/10/2024] Open
Abstract
Diode effects are of great interest for both fundamental physics and modern technologies. Electrical diode effects (nonreciprocal transport) have been observed in Weyl systems. Optical diode effects arising from the Weyl fermions have been theoretically considered but not probed experimentally. Here, we report the observation of a nonlinear optical diode effect (NODE) in the magnetic Weyl semimetal CeAlSi, where the magnetization introduces a pronounced directionality in the nonlinear optical second-harmonic generation (SHG). We demonstrate a six-fold change of the measured SHG intensity between opposite propagation directions over a bandwidth exceeding 250 meV. Supported by density-functional theory, we establish the linearly dispersive bands emerging from Weyl nodes as the origin of this broadband effect. We further demonstrate current-induced magnetization switching and thus electrical control of the NODE. Our results advance ongoing research to identify novel nonlinear optical/transport phenomena in magnetic topological materials and further opens new pathways for the unidirectional manipulation of light.
Collapse
Affiliation(s)
- Christian Tzschaschel
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA.
- Max-Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Berlin, Germany.
| | - Jian-Xiang Qiu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Xue-Jian Gao
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Hou-Chen Li
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Chunyu Guo
- Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany
- Laboratory of Quantum Materials (QMAT), Institute of Materials (IMX), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Hung-Yu Yang
- Department of Physics, Boston College, Chestnut Hill, MA, USA
| | - Cheng-Ping Zhang
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Ying-Ming Xie
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Yu-Fei Liu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Anyuan Gao
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Damien Bérubé
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Thao Dinh
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Sheng-Chin Ho
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Yuqiang Fang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai, China
- State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering Peking University, Beijing, China
| | - Fuqiang Huang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai, China
- State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering Peking University, Beijing, China
| | | | - Qiong Ma
- Department of Physics, Boston College, Chestnut Hill, MA, USA
- CIFAR Azrieli Global Scholars program, CIFAR, Toronto, Ontario, Canada
| | - Fazel Tafti
- Department of Physics, Boston College, Chestnut Hill, MA, USA
| | - Philip J W Moll
- Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany
- Laboratory of Quantum Materials (QMAT), Institute of Materials (IMX), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Kam Tuen Law
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Su-Yang Xu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA.
| |
Collapse
|
3
|
Cheng E, Yan L, Shi X, Lou R, Fedorov A, Behnami M, Yuan J, Yang P, Wang B, Cheng JG, Xu Y, Xu Y, Xia W, Pavlovskii N, Peets DC, Zhao W, Wan Y, Burkhardt U, Guo Y, Li S, Felser C, Yang W, Büchner B. Tunable positions of Weyl nodes via magnetism and pressure in the ferromagnetic Weyl semimetal CeAlSi. Nat Commun 2024; 15:1467. [PMID: 38368411 PMCID: PMC10874455 DOI: 10.1038/s41467-024-45658-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 01/30/2024] [Indexed: 02/19/2024] Open
Abstract
The noncentrosymmetric ferromagnetic Weyl semimetal CeAlSi with simultaneous space-inversion and time-reversal symmetry breaking provides a unique platform for exploring novel topological states. Here, by employing multiple experimental techniques, we demonstrate that ferromagnetism and pressure can serve as efficient parameters to tune the positions of Weyl nodes in CeAlSi. At ambient pressure, a magnetism-facilitated anomalous Hall/Nernst effect (AHE/ANE) is uncovered. Angle-resolved photoemission spectroscopy (ARPES) measurements demonstrated that the Weyl nodes with opposite chirality are moving away from each other upon entering the ferromagnetic phase. Under pressure, by tracing the pressure evolution of AHE and band structure, we demonstrate that pressure could also serve as a pivotal knob to tune the positions of Weyl nodes. Moreover, multiple pressure-induced phase transitions are also revealed. These findings indicate that CeAlSi provides a unique and tunable platform for exploring exotic topological physics and electron correlations, as well as catering to potential applications, such as spintronics.
Collapse
Affiliation(s)
- Erjian Cheng
- Leibniz Institute for Solid State and Materials Research (IFW-Dresden), 01069, Dresden, Germany.
- Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany.
| | - Limin Yan
- Center for High Pressure Science and Technology Advanced Research, 201203, Shanghai, China
- State Key Laboratory of Superhard Materials, Department of Physics, Jilin University, 130012, Changchun, China
| | - Xianbiao Shi
- State Key Laboratory of Advanced Welding & Joining, Harbin Institute of Technology, 150001, Harbin, China
- Flexible Printed Electronics Technology Center, Harbin Institute of Technology (Shenzhen), 518055, Shenzhen, China
| | - Rui Lou
- Leibniz Institute for Solid State and Materials Research (IFW-Dresden), 01069, Dresden, Germany.
- Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489, Berlin, Germany.
- Joint Laboratory "Functional Quantum Materials" at BESSY II, 12489, Berlin, Germany.
| | - Alexander Fedorov
- Leibniz Institute for Solid State and Materials Research (IFW-Dresden), 01069, Dresden, Germany
- Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489, Berlin, Germany
- Joint Laboratory "Functional Quantum Materials" at BESSY II, 12489, Berlin, Germany
| | - Mahdi Behnami
- Leibniz Institute for Solid State and Materials Research (IFW-Dresden), 01069, Dresden, Germany
| | - Jian Yuan
- School of Physical Science and Technology, ShanghaiTech University, 200031, Shanghai, China
| | - Pengtao Yang
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, 100190, Beijing, China
- School of Physical Sciences, University of Chinese Academy of Sciences, 100190, Beijing, China
| | - Bosen Wang
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, 100190, Beijing, China
- School of Physical Sciences, University of Chinese Academy of Sciences, 100190, Beijing, China
| | - Jin-Guang Cheng
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, 100190, Beijing, China
- School of Physical Sciences, University of Chinese Academy of Sciences, 100190, Beijing, China
| | - Yuanji Xu
- Institute for Applied Physics, University of Science and Technology Beijing, 100083, Beijing, China
| | - Yang Xu
- Key Laboratory of Polar Materials and Devices (MOE), School of Physics and Electronic Science, East China Normal University, 200241, Shanghai, China
| | - Wei Xia
- School of Physical Science and Technology, ShanghaiTech University, 200031, Shanghai, China
| | - Nikolai Pavlovskii
- Institute of Solid State and Materials Physics, Technische Universität Dresden, 01069, Dresden, Germany
| | - Darren C Peets
- Institute of Solid State and Materials Physics, Technische Universität Dresden, 01069, Dresden, Germany
| | - Weiwei Zhao
- State Key Laboratory of Advanced Welding & Joining, Harbin Institute of Technology, 150001, Harbin, China
- Flexible Printed Electronics Technology Center, Harbin Institute of Technology (Shenzhen), 518055, Shenzhen, China
| | - Yimin Wan
- State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, 200438, Shanghai, China
| | - Ulrich Burkhardt
- Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany
| | - Yanfeng Guo
- School of Physical Science and Technology, ShanghaiTech University, 200031, Shanghai, China
| | - Shiyan Li
- State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, 200438, Shanghai, China
- Collaborative Innovation Center of Advanced Microstructures, 210093, Nanjing, China
- Shanghai Research Center for Quantum Sciences, 201315, Shanghai, China
| | - Claudia Felser
- Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany
| | - Wenge Yang
- Center for High Pressure Science and Technology Advanced Research, 201203, Shanghai, China.
| | - Bernd Büchner
- Leibniz Institute for Solid State and Materials Research (IFW-Dresden), 01069, Dresden, Germany.
- Institute of Solid State and Materials Physics and Würzburg-Dresden Cluster of Excellence-ct.qmat, Technische Universität Dresden, 01062, Dresden, Germany.
| |
Collapse
|
4
|
Li C, Zhang J, Wang Y, Liu H, Guo Q, Rienks E, Chen W, Bertran F, Yang H, Phuyal D, Fedderwitz H, Thiagarajan B, Dendzik M, Berntsen MH, Shi Y, Xiang T, Tjernberg O. Emergence of Weyl fermions by ferrimagnetism in a noncentrosymmetric magnetic Weyl semimetal. Nat Commun 2023; 14:7185. [PMID: 37938548 PMCID: PMC10632385 DOI: 10.1038/s41467-023-42996-8] [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: 04/19/2023] [Accepted: 10/26/2023] [Indexed: 11/09/2023] Open
Abstract
Condensed matter physics has often provided a platform for investigating the interplay between particles and fields in cases that have not been observed in high-energy physics. Here, using angle-resolved photoemission spectroscopy, we provide an example of this by visualizing the electronic structure of a noncentrosymmetric magnetic Weyl semimetal candidate NdAlSi in both the paramagnetic and ferrimagnetic states. We observe surface Fermi arcs and bulk Weyl fermion dispersion as well as the emergence of new Weyl fermions in the ferrimagnetic state. Our results establish NdAlSi as a magnetic Weyl semimetal and provide an experimental observation of ferrimagnetic regulation of Weyl fermions in condensed matter.
Collapse
Affiliation(s)
- Cong Li
- Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, 11419, Sweden.
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA.
| | - Jianfeng Zhang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yang Wang
- Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, 11419, Sweden
| | - Hongxiong Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Qinda Guo
- Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, 11419, Sweden
| | - Emile Rienks
- Helmholtz-Zentrum Berlin für Materialien und Energie, Elektronenspeicherring BESSY II, Albert-Einstein-Straße 15, 12489, Berlin, Germany
| | - Wanyu Chen
- Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, 11419, Sweden
| | - Francois Bertran
- Synchrotron SOLEIL, L'Orme des Merisiers, Départementale 128, 91190, Saint-Aubin, France
| | - Huancheng Yang
- Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing, 100872, China
| | - Dibya Phuyal
- Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, 11419, Sweden
| | | | | | - Maciej Dendzik
- Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, 11419, Sweden
| | - Magnus H Berntsen
- Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, 11419, Sweden
| | - Youguo Shi
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Tao Xiang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Oscar Tjernberg
- Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, 11419, Sweden.
| |
Collapse
|
5
|
Drucker NC, Nguyen T, Han F, Siriviboon P, Luo X, Andrejevic N, Zhu Z, Bednik G, Nguyen QT, Chen Z, Nguyen LK, Liu T, Williams TJ, Stone MB, Kolesnikov AI, Chi S, Fernandez-Baca J, Nelson CS, Alatas A, Hogan T, Puretzky AA, Huang S, Yu Y, Li M. Topology stabilized fluctuations in a magnetic nodal semimetal. Nat Commun 2023; 14:5182. [PMID: 37626027 PMCID: PMC10457388 DOI: 10.1038/s41467-023-40765-1] [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: 04/01/2021] [Accepted: 08/07/2023] [Indexed: 08/27/2023] Open
Abstract
The interplay between magnetism and electronic band topology enriches topological phases and has promising applications. However, the role of topology in magnetic fluctuations has been elusive. Here, we report evidence for topology stabilized magnetism above the magnetic transition temperature in magnetic Weyl semimetal candidate CeAlGe. Electrical transport, thermal transport, resonant elastic X-ray scattering, and dilatometry consistently indicate the presence of locally correlated magnetism within a narrow temperature window well above the thermodynamic magnetic transition temperature. The wavevector of this short-range order is consistent with the nesting condition of topological Weyl nodes, suggesting that it arises from the interaction between magnetic fluctuations and the emergent Weyl fermions. Effective field theory shows that this topology stabilized order is wavevector dependent and can be stabilized when the interband Weyl fermion scattering is dominant. Our work highlights the role of electronic band topology in stabilizing magnetic order even in the classically disordered regime.
Collapse
Affiliation(s)
- Nathan C Drucker
- Quantum Measurement Group, MIT, Cambridge, MA, USA.
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA.
| | - Thanh Nguyen
- Quantum Measurement Group, MIT, Cambridge, MA, USA
- Department of Nuclear Science and Engineering, MIT, Cambridge, MA, USA
| | - Fei Han
- Quantum Measurement Group, MIT, Cambridge, MA, USA
- Department of Nuclear Science and Engineering, MIT, Cambridge, MA, USA
| | - Phum Siriviboon
- Quantum Measurement Group, MIT, Cambridge, MA, USA
- Department of Physics, MIT, Cambridge, MA, USA
| | - Xi Luo
- College of Science, University of Shanghai for Science and Technology, Shanghai, China
| | | | - Ziming Zhu
- School of Physics and Electronics, Hunan Normal University, Changsha, China
| | - Grigory Bednik
- Department of Nuclear Science and Engineering, MIT, Cambridge, MA, USA
| | | | - Zhantao Chen
- SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | | | | | - Travis J Williams
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Matthew B Stone
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | | | - Songxue Chi
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | | | - Christie S Nelson
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, USA
| | - Ahmet Alatas
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, USA
| | - Tom Hogan
- Quantum Design, Inc., San Diego, CA, USA
| | - Alexander A Puretzky
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Shengxi Huang
- Department of Electrical Engineering, Rice University, Houston, TX, USA
| | - Yue Yu
- Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai, China.
| | - Mingda Li
- Quantum Measurement Group, MIT, Cambridge, MA, USA.
- Department of Nuclear Science and Engineering, MIT, Cambridge, MA, USA.
| |
Collapse
|
6
|
Cheng ZJ, Belopolski I, Tien HJ, Cochran TA, Yang XP, Ma W, Yin JX, Chen D, Zhang J, Jozwiak C, Bostwick A, Rotenberg E, Cheng G, Hossain MS, Zhang Q, Litskevich M, Jiang YX, Yao N, Schroeter NBM, Strocov VN, Lian B, Felser C, Chang G, Jia S, Chang TR, Hasan MZ. Visualization of Tunable Weyl Line in A-A Stacking Kagome Magnets. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2205927. [PMID: 36385535 DOI: 10.1002/adma.202205927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 10/19/2022] [Indexed: 06/16/2023]
Abstract
Kagome magnets provide a fascinating platform for a plethora of topological quantum phenomena, in which the delicate interplay between frustrated crystal structure, magnetization, and spin-orbit coupling (SOC) can engender highly tunable topological states. Here, utilizing angle-resolved photoemission spectroscopy, the Weyl lines are directly visualized with strong out-of-plane dispersion in the A-A stacked kagome magnet GdMn6 Sn6 . Remarkably, the Weyl lines exhibit a strong magnetization-direction-tunable SOC gap and binding energy tunability after substituting Gd with Tb and Li, respectively. These results not only illustrate the magnetization direction and valence counting as efficient tuning knobs for realizing and controlling distinct 3D topological phases, but also demonstrate AMn6 Sn6 (A = rare earth, or Li, Mg, or Ca) as a versatile material family for exploring diverse emergent topological quantum responses.
Collapse
Affiliation(s)
- Zi-Jia Cheng
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Ilya Belopolski
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Hung-Ju Tien
- Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Tyler A Cochran
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Xian P Yang
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Wenlong Ma
- International Center for Quantum Materials, School of Physics, Peking University, Beijing, 100871, China
| | - Jia-Xin Yin
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Dong Chen
- Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany
| | - Junyi Zhang
- Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Chris Jozwiak
- Advanced Light Source, E. O. Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Aaron Bostwick
- Advanced Light Source, E. O. Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Eli Rotenberg
- Advanced Light Source, E. O. Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Guangming Cheng
- Princeton Institute for Science and Technology of Materials, Princeton University, Princeton, NJ, 08544, USA
| | - Md Shafayat Hossain
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Qi Zhang
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Maksim Litskevich
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Yu-Xiao Jiang
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Nan Yao
- Princeton Institute for Science and Technology of Materials, Princeton University, Princeton, NJ, 08544, USA
| | | | - Vladimir N Strocov
- Swiss Light Source, Paul Scherrer Institute, 5232, Villigen, Switzerland
| | - Biao Lian
- Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Claudia Felser
- Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany
| | - Guoqing Chang
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Shuang Jia
- International Center for Quantum Materials, School of Physics, Peking University, Beijing, 100871, China
| | - Tay-Rong Chang
- Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan
- Center for Quantum Frontiers of Research and Technology (QFort), Tainan, 701, Taiwan
- Physics Division, National Center for Theoretical Sciences, Taipei, 10617, Taiwan
| | - M Zahid Hasan
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| |
Collapse
|
7
|
Investigation on crystal structure, electrical and magnetic properties of CeAl(Si1-xGex). J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.122877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
8
|
Progress and prospects in magnetic topological materials. Nature 2022; 603:41-51. [PMID: 35236973 DOI: 10.1038/s41586-021-04105-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 10/06/2021] [Indexed: 11/09/2022]
Abstract
Magnetic topological materials represent a class of compounds with properties that are strongly influenced by the topology of their electronic wavefunctions coupled with the magnetic spin configuration. Such materials can support chiral electronic channels of perfect conduction, and can be used for an array of applications, from information storage and control to dissipationless spin and charge transport. Here we review the theoretical and experimental progress achieved in the field of magnetic topological materials, beginning with the theoretical prediction of the quantum anomalous Hall effect without Landau levels, and leading to the recent discoveries of magnetic Weyl semimetals and antiferromagnetic topological insulators. We outline recent theoretical progress that has resulted in the tabulation of, for the first time, all magnetic symmetry group representations and topology. We describe several experiments realizing Chern insulators, Weyl and Dirac magnetic semimetals, and an array of axionic and higher-order topological phases of matter, and we survey future perspectives.
Collapse
|
9
|
Abstract
The interface between a solid and vacuum can become electronically distinct from the bulk. This feature, encountered in the case of quantum Hall effect, has a manifestation in insulators with topologically protected metallic surface states. Non-trivial Berry curvature of the Bloch waves or periodically driven perturbation are known to generate it. Here, by studying the angle-dependent magnetoresistance in prismatic bismuth crystals of different shapes, we detect a robust surface contribution to electric conductivity when the magnetic field is aligned parallel to a two-dimensional boundary between the three-dimensional crystal and vacuum. The effect is absent in antimony, which has an identical crystal symmetry, a similar Fermi surface structure and equally ballistic carriers, but an inverted band symmetry and a topological invariant of opposite sign. Our observation confirms that the boundary interrupting the cyclotron orbits remains metallic in bismuth, which is in agreement with what was predicted by Azbel decades ago. However, the absence of the effect in antimony indicates an intimate link between band symmetry and this boundary conductance. The topology of the surface states of a bismuth crystal remains an ongoing debate. Here, the authors observe surface electric conductivity with a magnetic field parallel to the two-dimensional boundary between the three-dimensional bismuth crystal and vacuum, but this effect is absent in antimony crystals indicating a link between band symmetry and boundary conductance.
Collapse
|
10
|
Zheng J, Deng Y, Yin J, Tang T, Garcia-Mendez R, Zhao Q, Archer LA. Textured Electrodes: Manipulating Built-In Crystallographic Heterogeneity of Metal Electrodes via Severe Plastic Deformation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2106867. [PMID: 34676922 DOI: 10.1002/adma.202106867] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/07/2021] [Indexed: 06/13/2023]
Abstract
Control of crystallography of metal electrodeposit films has recently emerged as a key to achieving long operating lifetimes in next-generation batteries. It is reported that the large crystallographic heterogeneity, e.g., broad orientational distribution, that appears characteristic of commercial metal foils, results in rough morphology upon plating/stripping. On this basis, an accumulative roll bonding (ARB) methodology-a severe plastic deformation process-is developed. Zn metal is used as a first example to interrogate the concept. It is demonstrated that the ARB process is highly effective in achieving uniform crystallographic control on macroscopic materials. After the ARB process, the Zn grains exhibit a strong (002) texture (i.e., [002]Zn //ND). The texture transitions from a classical bipolar pattern to a nonclassical unipolar pattern under large nominal strain eliminate the orientational heterogeneity of the foil. The strongly (002)-textured Zn remarkably improves the plating/stripping performance by nearly two orders of magnitude under practical conditions. The performance improvements are readily scaled to achieve pouch-type full batteries that deliver exceptional reversibility. The ARB process can, in principle, be applied to any metal chemistry to achieve similar crystallographic uniformity, provided the appropriate temperature and accumulated strains are employed. This concept is evaluated using commercial Li and Na foils, which, unlike Zn (HCP), are BCC crystals. The simple process for creating strong textures in both hexagonal and cubic metals and illustrating the critical role such built-in crystallography plays underscores opportunities for developing highly reversible thin metal anodes (e.g., hexagonal Zn, Mg, and cubic Li, Na, Ca, Al).
Collapse
Affiliation(s)
- Jingxu Zheng
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, 14853, USA
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, 02129, USA
| | - Yue Deng
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Jiefu Yin
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Tian Tang
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Regina Garcia-Mendez
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Qing Zhao
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Lynden A Archer
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, 14853, USA
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| |
Collapse
|
11
|
Gaudet J, Yang HY, Baidya S, Lu B, Xu G, Zhao Y, Rodriguez-Rivera JA, Hoffmann CM, Graf DE, Torchinsky DH, Nikolić P, Vanderbilt D, Tafti F, Broholm CL. Weyl-mediated helical magnetism in NdAlSi. NATURE MATERIALS 2021; 20:1650-1656. [PMID: 34413490 DOI: 10.1038/s41563-021-01062-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 06/23/2021] [Indexed: 06/13/2023]
Abstract
Emergent relativistic quasiparticles in Weyl semimetals are the source of exotic electronic properties such as surface Fermi arcs, the anomalous Hall effect and negative magnetoresistance, all observed in real materials. Whereas these phenomena highlight the effect of Weyl fermions on the electronic transport properties, less is known about what collective phenomena they may support. Here, we report a Weyl semimetal, NdAlSi, that offers an example. Using neutron diffraction, we found a long-wavelength helical magnetic order in NdAlSi, the periodicity of which is linked to the nesting vector between two topologically non-trivial Fermi pockets, which we characterize using density functional theory and quantum oscillation measurements. We further show the chiral transverse component of the spin structure is promoted by bond-oriented Dzyaloshinskii-Moriya interactions associated with Weyl exchange processes. Our work provides a rare example of Weyl fermions driving collective magnetism.
Collapse
Affiliation(s)
- Jonathan Gaudet
- Department of Physics and Astronomy and Institute for Quantum Matter, The Johns Hopkins University, Baltimore, MD, USA.
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA.
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, USA.
| | - Hung-Yu Yang
- Department of Physics, Boston College, Chestnut Hill, MA, USA
| | - Santu Baidya
- Department of Physics and Astronomy, Rutgers University, Piscataway, NJ, USA
| | - Baozhu Lu
- Department of Physics, Temple University, Philadelphia, PA, USA
| | - Guangyong Xu
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Yang Zhao
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, USA
| | - Jose A Rodriguez-Rivera
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, USA
| | | | - David E Graf
- National High Magnetic Field Laboratory, Tallahassee, FL, USA
| | | | - Predrag Nikolić
- Department of Physics and Astronomy and Institute for Quantum Matter, The Johns Hopkins University, Baltimore, MD, USA
- Department of Physics and Astronomy, George Mason University, Fairfax, VA, USA
| | - David Vanderbilt
- Department of Physics and Astronomy, Rutgers University, Piscataway, NJ, USA
| | - Fazel Tafti
- Department of Physics, Boston College, Chestnut Hill, MA, USA
| | - Collin L Broholm
- Department of Physics and Astronomy and Institute for Quantum Matter, The Johns Hopkins University, Baltimore, MD, USA
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
| |
Collapse
|
12
|
Seo J, De C, Ha H, Lee JE, Park S, Park J, Skourski Y, Choi ES, Kim B, Cho GY, Yeom HW, Cheong SW, Kim JH, Yang BJ, Kim K, Kim JS. Colossal angular magnetoresistance in ferrimagnetic nodal-line semiconductors. Nature 2021; 599:576-581. [PMID: 34819684 DOI: 10.1038/s41586-021-04028-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 09/15/2021] [Indexed: 11/09/2022]
Abstract
Efficient magnetic control of electronic conduction is at the heart of spintronic functionality for memory and logic applications1,2. Magnets with topological band crossings serve as a good material platform for such control, because their topological band degeneracy can be readily tuned by spin configurations, dramatically modulating electronic conduction3-10. Here we propose that the topological nodal-line degeneracy of spin-polarized bands in magnetic semiconductors induces an extremely large angular response of magnetotransport. Taking a layered ferrimagnet, Mn3Si2Te6, and its derived compounds as a model system, we show that the topological band degeneracy, driven by chiral molecular orbital states, is lifted depending on spin orientation, which leads to a metal-insulator transition in the same ferrimagnetic phase. The resulting variation of angular magnetoresistance with rotating magnetization exceeds a trillion per cent per radian, which we call colossal angular magnetoresistance. Our findings demonstrate that magnetic nodal-line semiconductors are a promising platform for realizing extremely sensitive spin- and orbital-dependent functionalities.
Collapse
Affiliation(s)
- Junho Seo
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, Korea.,Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang, Korea
| | - Chandan De
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, Korea.,Laboratory of Pohang Emergent Materials, Pohang Accelerator Laboratory, Pohang, Korea
| | - Hyunsoo Ha
- Department of Physics and Astronomy, Seoul National University, Seoul, Korea
| | - Ji Eun Lee
- Department of Physics, Yonsei University, Seoul, Korea
| | - Sungyu Park
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, Korea
| | - Joonbum Park
- Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Yurii Skourski
- Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Eun Sang Choi
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, USA
| | - Bongjae Kim
- Department of Physics, Kunsan National University, Gunsan, Korea
| | - Gil Young Cho
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, Korea.,Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang, Korea.,Asia Pacific Center for Theoretical Physics, Pohang, Korea
| | - Han Woong Yeom
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, Korea.,Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang, Korea
| | - Sang-Wook Cheong
- Laboratory of Pohang Emergent Materials, Pohang Accelerator Laboratory, Pohang, Korea.,Rutgers Center for Emergent Materials and Department of Physics & Astronomy, Rutgers University, Piscataway, NJ, USA
| | - Jae Hoon Kim
- Department of Physics, Yonsei University, Seoul, Korea.
| | - Bohm-Jung Yang
- Department of Physics and Astronomy, Seoul National University, Seoul, Korea. .,Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul, Korea. .,Center for Theoretical Physics (CTP), Seoul National University, Seoul, Korea.
| | - Kyoo Kim
- Korea Atomic Energy Research Institute (KAERI), Daejeon, Korea.
| | - Jun Sung Kim
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, Korea. .,Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang, Korea.
| |
Collapse
|
13
|
Huan S, Zhang S, Jiang Z, Su H, Wang H, Zhang X, Yang Y, Liu Z, Wang X, Yu N, Zou Z, Shen D, Liu J, Guo Y. Multiple Magnetic Topological Phases in Bulk van der Waals Crystal MnSb_{4}Te_{7}. PHYSICAL REVIEW LETTERS 2021; 126:246601. [PMID: 34213928 DOI: 10.1103/physrevlett.126.246601] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 05/27/2021] [Indexed: 06/13/2023]
Abstract
The magnetic van der Waals crystals MnBi_{2}Te_{4}/(Bi_{2}Te_{3})_{n} have drawn significant attention due to their rich topological properties and the tunability by external magnetic field. Although the MnBi_{2}Te_{4}/(Bi_{2}Te_{3})_{n} family have been intensively studied in the past few years, their close relatives, the MnSb_{2}Te_{4}/(Sb_{2}Te_{3})_{n} family, remain much less explored. In this work, combining magnetotransport measurements, angle-resolved photoemission spectroscopy, and first principles calculations, we find that MnSb_{4}Te_{7}, the n=1 member of the MnSb_{2}Te_{4}/(Sb_{2}Te_{3})_{n} family, is a magnetic topological system with versatile topological phases that can be manipulated by both carrier doping and magnetic field. Our calculations unveil that its A-type antiferromagnetic (AFM) ground state stays in a Z_{2} AFM topological insulator phase, which can be converted to an inversion-symmetry-protected axion insulator phase when in the ferromagnetic (FM) state. Moreover, when this system in the FM phase is slightly carrier doped on either the electron or hole side, it becomes a Weyl semimetal with multiple Weyl nodes in the highest valence bands and lowest conduction bands, which are manifested by the measured notable anomalous Hall effect. Our work thus introduces a new magnetic topological material with different topological phases that are highly tunable by carrier doping or magnetic field.
Collapse
Affiliation(s)
- Shuchun Huan
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Shihao Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Zhicheng Jiang
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology (SIMIT), Chinese Academy of Sciences, Shanghai 200050, China
| | - Hao Su
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Hongyuan Wang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Xin Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yichen Yang
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology (SIMIT), Chinese Academy of Sciences, Shanghai 200050, China
| | - Zhengtai Liu
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology (SIMIT), Chinese Academy of Sciences, Shanghai 200050, China
| | - Xia Wang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- Analytical Instrumentation Center, School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Na Yu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- Analytical Instrumentation Center, School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Zhiqiang Zou
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- Analytical Instrumentation Center, School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Dawei Shen
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology (SIMIT), Chinese Academy of Sciences, Shanghai 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jianpeng Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- ShanghaiTech Laboratory for Topological Physics, Shanghai 201210, China
| | - Yanfeng Guo
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| |
Collapse
|
14
|
Sanchez DS, Chang G, Belopolski I, Lu H, Yin JX, Alidoust N, Xu X, Cochran TA, Zhang X, Bian Y, Zhang SS, Liu YY, Ma J, Bian G, Lin H, Xu SY, Jia S, Hasan MZ. Observation of Weyl fermions in a magnetic non-centrosymmetric crystal. Nat Commun 2020; 11:3356. [PMID: 32620859 PMCID: PMC7335064 DOI: 10.1038/s41467-020-16879-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 03/19/2020] [Indexed: 11/21/2022] Open
Abstract
The absence of inversion symmetry in non-centrosymmetric materials has a fundamental role in the emergence of a vast number of fascinating phenomena, like ferroelectricity, second harmonic generation, and Weyl fermions. The removal of time-reversal symmetry in such systems further extends the variety of observable magneto-electric and topological effects. Here we report the striking topological properties in the non-centrosymmetric spin-orbit magnet PrAlGe by combining spectroscopy and transport measurements. By photoemission spectroscopy below the Curie temperature, we observe topological Fermi arcs that correspond to projected topological charges of ±1 in the surface Brillouin zone. In the bulk, we observe the linear energy-dispersion of the Weyl fermions. We further observe a large anomalous Hall response in our magneto-transport measurements, which is understood to arise from diverging bulk Berry curvature fields associated with the Weyl band structure. These results establish a novel Weyl semimetal phase in magnetic non-centrosymmetric PrAlGe.
Collapse
Affiliation(s)
- Daniel S Sanchez
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Guoqing Chang
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Ilya Belopolski
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Hong Lu
- International Center for Quantum Materials, School of Physics, Peking University, Peking, China
| | - Jia-Xin Yin
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Nasser Alidoust
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
- Rigetti Computing, Berkeley, CA, 94720, USA
| | - Xitong Xu
- International Center for Quantum Materials, School of Physics, Peking University, Peking, China
| | - Tyler A Cochran
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Xiao Zhang
- International Center for Quantum Materials, School of Physics, Peking University, Peking, China
| | - Yi Bian
- International Center for Quantum Materials, School of Physics, Peking University, Peking, China
| | - Songtian S Zhang
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Yi-Yuan Liu
- International Center for Quantum Materials, School of Physics, Peking University, Peking, China
| | - Jie Ma
- Key Laboratory of Artificial Structures and Quantum Control, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - Guang Bian
- Department of Physics and Astronomy, University of Missouri, Columbia, MO, USA
| | - Hsin Lin
- Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan
| | - Su-Yang Xu
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA
| | - Shuang Jia
- International Center for Quantum Materials, School of Physics, Peking University, Peking, China
- Collaborative Innovation Center of Quantum Matter, 100871, Beijing, China
| | - M Zahid Hasan
- Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, 08544, USA.
- Princeton Institute for Science and Technology of Materials, Princeton University, Princeton, NJ, 08544, USA.
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
| |
Collapse
|
15
|
Zhang MH, Zhang SF, Wang PJ, Zhang CW. Emergence of a spin-valley Dirac semimetal in a strained group-VA monolayer. NANOSCALE 2020; 12:3950-3957. [PMID: 32010916 DOI: 10.1039/c9nr09545d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The combination of Dirac and Valley physics in one single-layer system is a very interesting topic and has received widespread attention in materials science and condensed matter physics. Using density-functional theoretical calculations, we predict that a two-dimensional (2D) cyanided group-VA monolayer, MAs(CN)2 (M = Sb, Bi), can turn into the spin-valley Dirac point (svDP) state under external strains. In sharp contrast to the symmetry protected 2D Dirac semimetal (DSM), the Dirac Fermions in svDP materials are spin non-degenerate due to strong spin-splitting under SOC. Remarkably, the Dirac fermions in inequivalent valleys can host opposite Berry curvature and spin moment, leading to the Dirac spin-valley Hall effect with dissipationless transport. We also find that the svDP of MAs(CN)2 is a critical state of topological phase transition between the trivial and nontrivial states. An effective tight-binding model is used to unveil the physics of svDP and topological phase transition under strain. These results will provide a route towards the integration of spin-valley indexes in 2D Dirac materials and design multipurpose and controllable devices in valleytronics.
Collapse
Affiliation(s)
- Meng-Han Zhang
- School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, People's Republic of China.
| | - Shu-Feng Zhang
- School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, People's Republic of China.
| | - Pei-Ji Wang
- School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, People's Republic of China.
| | - Chang-Wen Zhang
- School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, People's Republic of China.
| |
Collapse
|
16
|
Hassinger E, Meng T. Magnetic modification of electrical resistance. Science 2019; 365:324. [DOI: 10.1126/science.aay3059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
A switching mechanism enables finely tuned magnetoresistance for electronic devices
Collapse
Affiliation(s)
- Elena Hassinger
- Max Planck Institute for Chemical Physics of Solids, Dresden, Germany
- Physik Department, Technical University Munich, Munich, Germany
| | - Tobias Meng
- Institute of Theoretical Physics, Technische Universität Dresden, Dresden, Germany
| |
Collapse
|
17
|
Suzuki T, Savary L, Liu JP, Lynn JW, Balents L, Checkelsky JG. Singular angular magnetoresistance in a magnetic nodal semimetal. Science 2019; 365:377-381. [PMID: 31221772 PMCID: PMC11131137 DOI: 10.1126/science.aat0348] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 06/07/2019] [Indexed: 05/30/2024]
Abstract
Transport coefficients of correlated electron systems are often useful for mapping hidden phases with distinct symmetries. Here we report a transport signature of spontaneous symmetry breaking in the magnetic Weyl semimetal cerium-aluminum-germanium (CeAlGe) system in the form of singular angular magnetoresistance (SAMR). This angular response exceeding 1000% per radian is confined along the high-symmetry axes with a full width at half maximum reaching less than 1° and is tunable via isoelectronic partial substitution of silicon for germanium. The SAMR phenomena is explained theoretically as a consequence of controllable high-resistance domain walls, arising from the breaking of magnetic point group symmetry strongly coupled to a nearly nodal electronic structure. This study indicates ingredients for engineering magnetic materials with high angular sensitivity by lattice and site symmetries.
Collapse
Affiliation(s)
- T Suzuki
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - L Savary
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Kavli Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106, USA
- Université de Lyon, École Normale Supérieure de Lyon, Université Claude Bernard Lyon I, CNRS, Laboratoire de Physique, 46 Allée d'Italie, 69007 Lyon, France
| | - J-P Liu
- Kavli Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106, USA
- Department of Physics, The Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | - J W Lynn
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - L Balents
- Kavli Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106, USA
| | - J G Checkelsky
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
| |
Collapse
|