1
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Lin T, Chen X, Xu R, Luo J, Zhu H. Ultrafast Polarization-Resolved Phonon Dynamics in Monolayer Semiconductors. NANO LETTERS 2024. [PMID: 39137095 DOI: 10.1021/acs.nanolett.4c02787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Monolayer transition metal dichalcogenide semiconductors exhibit unique valleytronic properties interacting strongly with chiral phonons that break time-reversal symmetry. Here, we observed the ultrafast dynamics of linearly and circularly polarized E'(Γ) phonons at the Brillouin zone center in single-crystalline monolayer WS2, excited by intense, resonant, and polarization-tunable terahertz pulses and probed by time-resolved anti-Stokes Raman spectroscopy. We separated the coherent phonons producing directional sum-frequency generation from the incoherent phonon population emitting scattered photons. The longer incoherent population lifetime than what was expected from coherence lifetime indicates that inhomogeneous broadening and momentum scattering play important roles in phonon decoherence at room temperature. Meanwhile, the faster depolarization rate in circular bases than in linear bases suggests that the eigenstates are linearly polarized due to lattice anisotropy. Our results provide crucial information for improving the lifetime of chiral phonons in two-dimensional materials and potentially facilitate dynamic control of spin-orbital polarizations in quantum materials.
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Affiliation(s)
- Tong Lin
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Xiaotong Chen
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Rui Xu
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Jiaming Luo
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Hanyu Zhu
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
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2
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Hoglund ER, Walker HA, Hussain K, Bao DL, Ni H, Mamun A, Baxter J, Caldwell JD, Khan A, Pantelides ST, Hopkins PE, Hachtel JA. Nonequivalent Atomic Vibrations at Interfaces in a Polar Superlattice. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2402925. [PMID: 38717326 DOI: 10.1002/adma.202402925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/17/2024] [Indexed: 06/15/2024]
Abstract
In heterostructures made from polar materials, e.g., AlN-GaN-AlN, the nonequivalence of the two interfaces is long recognized as a critical aspect of their electronic properties; in that, they host different 2D carrier gases. Interfaces play an important role in the vibrational properties of materials, where interface states enhance thermal conductivity and can generate unique infrared-optical activity. The nonequivalence of the corresponding interface atomic vibrations, however, is not investigated so far due to a lack of experimental techniques with both high spatial and high spectral resolution. Herein, the nonequivalence of AlN-(Al0.65Ga0.35)N and (Al0.65Ga0.35)N-AlN interface vibrations is experimentally demonstrated using monochromated electron energy-loss spectroscopy in the scanning transmission electron microscope (STEM-EELS) and density-functional-theory (DFT) calculations are employed to gain insights in the physical origins of observations. It is demonstrated that STEM-EELS possesses sensitivity to the displacement vector of the vibrational modes as well as the frequency, which is as critical to understanding vibrations as polarization in optical spectroscopies. The combination enables direct mapping of the nonequivalent interface phonons between materials with different phonon polarizations. The results demonstrate the capacity to carefully assess the vibrational properties of complex heterostructures where interface states dominate the functional properties.
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Affiliation(s)
- Eric R Hoglund
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA
- Department of Materials Science and Engineering, University of Virginia, Charlottesville, VA, 22904, USA
| | - Harrison A Walker
- Department of Physics and, Astronomy, Vanderbilt University, Nashville, TN, 37235, USA
- Interdisciplinary Materials Science Program, Vanderbilt University, Nashville, TN, 37235, USA
| | - Kamal Hussain
- Department of Electrical Engineering, University of South Carolina, Columbia, SC, 29208, USA
| | - De-Liang Bao
- Department of Physics and, Astronomy, Vanderbilt University, Nashville, TN, 37235, USA
| | - Haoyang Ni
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61820, USA
- Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, 61820, USA
| | - Abdullah Mamun
- Interdisciplinary Materials Science Program, Vanderbilt University, Nashville, TN, 37235, USA
| | - Jefferey Baxter
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA
| | - Joshua D Caldwell
- Department of Mechanical Engineering and Electrical Engineering, Vanderbilt University, Nashville, TN, 37235, USA
| | - Asif Khan
- Department of Electrical Engineering, University of South Carolina, Columbia, SC, 29208, USA
| | - Sokrates T Pantelides
- Department of Physics and, Astronomy, Vanderbilt University, Nashville, TN, 37235, USA
- Interdisciplinary Materials Science Program, Vanderbilt University, Nashville, TN, 37235, USA
- Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN, 37235, USA
| | - Patrick E Hopkins
- Department of Materials Science and Engineering, University of Virginia, Charlottesville, VA, 22904, USA
- Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, VA, 22904, USA
- Department of Physics, University of Virginia, Charlottesville, VA, 22904, USA
| | - Jordan A Hachtel
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA
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3
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Fang Y, Kuttruff J, Nabben D, Baum P. Structured electrons with chiral mass and charge. Science 2024; 385:183-187. [PMID: 38991062 DOI: 10.1126/science.adp9143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 05/30/2024] [Indexed: 07/13/2024]
Abstract
Chirality is a phenomenon with widespread relevance in fundamental physics, material science, chemistry, optics, and spectroscopy. In this work, we show that a free electron can be converted by the field cycles of laser light into a right-handed or left-handed coil of mass and charge. In contrast to phase-vortex beams, our electrons maintained a flat de Broglie wave but obtained their chirality from the shape of their expectation value in space and time. Measurements of wave function densities by attosecond gating revealed the three-dimensional shape of coils and double coils with left-handed or right-handed pitch. Engineered elementary particles with such or related chiral geometries should be useful for applications in chiral sensing, free-electron quantum optics, particle physics or electron microscopy.
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Affiliation(s)
- Yiqi Fang
- Universität Konstanz, Fachbereich Physik, 78464 Konstanz, Germany
| | - Joel Kuttruff
- Universität Konstanz, Fachbereich Physik, 78464 Konstanz, Germany
| | - David Nabben
- Universität Konstanz, Fachbereich Physik, 78464 Konstanz, Germany
| | - Peter Baum
- Universität Konstanz, Fachbereich Physik, 78464 Konstanz, Germany
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4
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Choi IH, Jeong SG, Song S, Park S, Shin DB, Choi WS, Lee JS. Real-time dynamics of angular momentum transfer from spin to acoustic chiral phonon in oxide heterostructures. NATURE NANOTECHNOLOGY 2024:10.1038/s41565-024-01719-w. [PMID: 38997512 DOI: 10.1038/s41565-024-01719-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 06/12/2024] [Indexed: 07/14/2024]
Abstract
Chiral phonons have recently been explored as a novel degree of freedom in quantum materials. The angular momentum carried by these quasiparticles is generated by the breaking of chiral degeneracy of phonons, owing to the chiral lattice structure or the rotational motion of ions of the material. In ferromagnets, a mechanism for generating non-equilibrium chiral phonons has been suggested, but their temporal evolution, which obeys Bose-Einstein statistics, remains unclear. Here we report the real-time dynamics of thermalized chiral phonons in an artificial superlattice composed of ferromagnetic metallic SrRuO3 and non-magnetic insulating SrTiO3. Following the photo-induced ultrafast demagnetization in the SrRuO3 layer, we observed the appearance of a magneto-optic signal in the superlattice, which is absent in the SrRuO3 single films. This magneto-optic signal exhibits thermally driven dynamic properties and a clear correlation with the thickness of the non-magnetic SrTiO3 layer, implying that it originates from thermalized chiral phonons. We use numerical calculations considering the magneto-elastic coupling in SrRuO3 to validate our experimental observations and the angular momentum transfer mechanism between the lattice and spin systems in ferromagnetic systems and also to the non-magnetic system.
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Affiliation(s)
- In Hyeok Choi
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Seung Gyo Jeong
- Department of Physics, Sungkyunkwan University, Suwon, Republic of Korea
| | - Sehwan Song
- Department of Physics, Pusan National University, Busan, Republic of Korea
| | - Sungkyun Park
- Department of Physics, Pusan National University, Busan, Republic of Korea
| | - Dong Bin Shin
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
- Max Planck Institute for the Structure and Dynamics of Matter and Center for Free Electron Laser Science, Hamburg, Germany
| | - Woo Seok Choi
- Department of Physics, Sungkyunkwan University, Suwon, Republic of Korea
| | - Jong Seok Lee
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea.
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5
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Zhang Y, Ma Y, Sun W, Li W, Li G. Structural and Electronic Chirality in Inorganic Crystals: from Construction to Application. Chemistry 2024; 30:e202400436. [PMID: 38571318 DOI: 10.1002/chem.202400436] [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: 01/31/2024] [Revised: 03/31/2024] [Accepted: 04/03/2024] [Indexed: 04/05/2024]
Abstract
Chirality represents a fundamental characteristic inherent in nature, playing a pivotal role in the emergence of homochirality and the origin of life. While the principles of chirality in organic chemistry are well-documented, the exploration of chirality within inorganic crystal structures continues to evolve. This ongoing development is primarily due to the diverse nature of crystal/amorphous structures in inorganic materials, along with the intricate symmetrical and asymmetrical relationships in the geometry of their constituent atoms. In this review, we commence with a summary of the foundational concept of chirality in molecules and solid states matters. This is followed by an introduction of structural chirality and electronic chirality in three-dimensional and two-dimensional inorganic materials. The construction of chirality in inorganic materials is classified into physical photolithography, wet-chemistry method, self-assembly, and chiral imprinting. Highlighting the significance of this field, we also summarize the research progress of chiral inorganic materials for applications in optical activity, enantiomeric recognition and chiral sensing, selective adsorption and enantioselective separation, asymmetric synthesis and catalysis, and chirality-induced spin polarization. This review aims to provide a reference for ongoing research in chiral inorganic materials and potentially stimulate innovative strategies and novel applications in the realm of chirality.
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Affiliation(s)
- Yudi Zhang
- CAS Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- University of Chinese Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing, 100049, China
| | - Yuzhe Ma
- CAS Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- University of Chinese Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing, 100049, China
| | - Wen Sun
- CAS Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- University of Chinese Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing, 100049, China
| | - Wei Li
- CISRI & NIMTE Joint Innovation Center for Rare Earth Permanent Magnets, Chinese Academy of Sciences, Ningbo Institute of Material Technology and Engineering, Ningbo, 315201, China
| | - Guowei Li
- CAS Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- University of Chinese Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing, 100049, China
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6
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Er E, Chow TH, Liz-Marzán LM, Kotov NA. Circular Polarization-Resolved Raman Optical Activity: A Perspective on Chiral Spectroscopies of Vibrational States. ACS NANO 2024; 18:12589-12597. [PMID: 38709673 PMCID: PMC11112978 DOI: 10.1021/acsnano.3c13228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 03/20/2024] [Accepted: 04/16/2024] [Indexed: 05/08/2024]
Abstract
Circular polarization-resolved Raman scattering methods include Raman optical activity (ROA) and its derivative─surface-enhanced Raman optical activity (SEROA). These spectroscopic modalities are rapidly developing due to their high information content, stand-off capabilities, and rapid development of Raman-active chiral nanostructures. These methods enable a direct readout of the vibrational energy levels of chiral molecules, crystals, and nanostructured materials, making it possible to study complex interactions and the dynamic interfaces between them. They were shown to be particularly valuable for nano- and biotechnological fields encompassing complex particles with nanoscale chirality that combine strong scattering and intense polarization rotation. This perspective dives into recent advancements in ROA and SEROA, their distinction from surface-enhanced Raman scattering, and the potential of these information-rich label-free spectroscopies for the detection of chiral biomolecules.
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Affiliation(s)
- Engin Er
- Department
of Chemical Engineering, University of Michigan, Ann Arbor 48109-2102, Michigan, United States
- NSF
Center for Complex Particle Systems (COMPASS), Ann Arbor 48109, Michigan, United States
- Biotechnology
Institute, Ankara University, Ankara 06135, Turkey
| | - Tsz Him Chow
- CIC
biomaGUNE, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián 20014, Spain
| | - Luis M. Liz-Marzán
- CIC
biomaGUNE, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián 20014, Spain
- Ikerbasque,
Basque Foundation for Science, Bilbao 43009, Spain
- Centro de
Investigación Biomédica en Red, Bioingeniería,
Biomateriales y Nanomedicina (CIBER-BBN), Donostia-San Sebastián 20014, Spain
- Cinbio, University of Vigo, Vigo 36310, Spain
| | - Nicholas A. Kotov
- Department
of Chemical Engineering, University of Michigan, Ann Arbor 48109-2102, Michigan, United States
- NSF
Center for Complex Particle Systems (COMPASS), Ann Arbor 48109, Michigan, United States
- Department
of Materials Science, University of Michigan, Ann Arbor 48109-2102, Michigan, United States
- Biointerfaces
Institute, University of Michigan, Ann Arbor 48109-2102, Michigan, United States
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7
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Cameron RP, Alexakis EI, Arnold AS, McArthur D. Theory of Rayleigh-Brillouin optical activity light scattering applicable to chiral liquids. Phys Chem Chem Phys 2024; 26:11641-11648. [PMID: 38546720 DOI: 10.1039/d3cp05109a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
It has long been understood that dilute samples of chiral molecules such as rarefied gases should exhibit Rayleigh optical activity. We extend the existing theory by accounting for molecular dynamics and correlations, thus obtaining a more general theory of Rayleigh-Brillouin optical activity applicable to dense samples such as neat liquids.
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Affiliation(s)
- Robert P Cameron
- SUPA and Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
| | | | - Aidan S Arnold
- SUPA and Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
| | - Duncan McArthur
- SUPA and Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
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8
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Wang T, Sun H, Li X, Zhang L. Chiral Phonons: Prediction, Verification, and Application. NANO LETTERS 2024; 24:4311-4318. [PMID: 38587210 DOI: 10.1021/acs.nanolett.4c00606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Chirality as an asymmetric property is prevalent in nature. In physics, the chirality of the elementary particles that make up matter has been widely studied and discussed, and nowadays, the concept has developed into the field of phonons. As an important fundamental excitation in condensed matter physics, phonons are traditionally considered to be linearly polarized and nonchiral. However, in recent years, the chirality of phonons has been revealed and further experimentally verified. The discovery has triggered a series of new explorations and developments in phonon-related physical processes. This Mini-Review provides an overview of the theoretical prediction of chiral phonons and multiple experimental detection methods and highlights the current key issues in the application of chiral phonons in different fields.
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Affiliation(s)
- Tingting Wang
- Phonon Engineering Research Center of Jiangsu Province, Ministry of Education Key Laboratory of NSLSCS, Center for Quantum Transport and Thermal Energy Science, Institute of Physics Frontiers and Interdisciplinary Sciences, School of Physics and Technology, Nanjing Normal University, Nanjing 210023, China
| | - Hong Sun
- Phonon Engineering Research Center of Jiangsu Province, Ministry of Education Key Laboratory of NSLSCS, Center for Quantum Transport and Thermal Energy Science, Institute of Physics Frontiers and Interdisciplinary Sciences, School of Physics and Technology, Nanjing Normal University, Nanjing 210023, China
| | - Xiaozhe Li
- Phonon Engineering Research Center of Jiangsu Province, Ministry of Education Key Laboratory of NSLSCS, Center for Quantum Transport and Thermal Energy Science, Institute of Physics Frontiers and Interdisciplinary Sciences, School of Physics and Technology, Nanjing Normal University, Nanjing 210023, China
| | - Lifa Zhang
- Phonon Engineering Research Center of Jiangsu Province, Ministry of Education Key Laboratory of NSLSCS, Center for Quantum Transport and Thermal Energy Science, Institute of Physics Frontiers and Interdisciplinary Sciences, School of Physics and Technology, Nanjing Normal University, Nanjing 210023, China
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9
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Romao CP, Juraschek DM. Light makes atoms behave like electromagnetic coils. Nature 2024; 628:505-506. [PMID: 38600195 DOI: 10.1038/d41586-024-00889-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
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10
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Lange G, Pottecher JDF, Robey C, Monserrat B, Peng B. Negative Refraction of Weyl Phonons at Twin Quartz Interfaces. ACS MATERIALS LETTERS 2024; 6:847-855. [PMID: 38455509 PMCID: PMC10915867 DOI: 10.1021/acsmaterialslett.3c00846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 03/09/2024]
Abstract
In Nature, α-quartz crystals frequently form contact twins, which are two adjacent crystals with the same chemical structure but different crystallographic orientation, sharing a common lattice plane. As α-quartz crystallizes in a chiral space group, such twinning can occur between enantiomorphs with the same handedness or with opposite handedness. Here, we use first-principles methods to investigate the effect of twinning and chirality on the bulk and surface phonon spectra, as well as on the topological properties of phonons in α-quartz. We demonstrate that, even though the dispersion appears identical for all twins along all high-symmetry lines and at all high-symmetry points in the Brillouin zone, the dispersions can be distinct at generic momenta for some twin structures. Furthermore, when the twinning occurs between different enantiomorphs, the charges of all Weyl nodal points flip, which leads to mirror symmetric isofrequency contours of the surface arcs on certain surfaces. We show that this allows negative refraction to occur at interfaces between certain twins of α-quartz.
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Affiliation(s)
- Gunnar
F. Lange
- Theory
of Condensed Matter Group, Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Juan D. F. Pottecher
- St.
Catharine’s College, University of
Cambridge, Trumpington Street, Cambridge CB2 1RL, United Kingdom
| | - Cameron Robey
- St.
John’s College, University of Cambridge, St John’s Street, Cambridge CB2 1TP, United Kingdom
| | - Bartomeu Monserrat
- Theory
of Condensed Matter Group, Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
| | - Bo Peng
- Theory
of Condensed Matter Group, Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom
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11
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Ohe K, Shishido H, Kato M, Utsumi S, Matsuura H, Togawa Y. Chirality-Induced Selectivity of Phonon Angular Momenta in Chiral Quartz Crystals. PHYSICAL REVIEW LETTERS 2024; 132:056302. [PMID: 38364155 DOI: 10.1103/physrevlett.132.056302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 10/18/2023] [Accepted: 12/07/2023] [Indexed: 02/18/2024]
Abstract
A generation, propagation, and transfer of phonon angular momenta are examined on thermal transport in chiral insulative and diamagnetic crystals of α-quartz. We found that thermally driven phonons carry chirality-dependent angular momenta in the quartz crystals and they could be extracted from the quartz as a spin signal. Namely, chirality-induced selectivity of phonon angular momenta is realized in the chiral quartz. We argue that chiral phonons available in chiral materials could be a key element in triggering or enhancing chirality-induced spin selectivity with robust spin polarization and long-range spin transport found in various chiral materials.
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Affiliation(s)
- Kazuki Ohe
- Department of Physics and Electronics, Osaka Prefecture University, 1-1 Gakuencho, Sakai, Osaka 599-8531, Japan
| | - Hiroaki Shishido
- Department of Physics and Electronics, Osaka Prefecture University, 1-1 Gakuencho, Sakai, Osaka 599-8531, Japan
- Department of Physics and Electronics, Osaka Metroplitan University, 1-1 Gakuencho, Sakai, Osaka 599-8531, Japan
| | - Masaki Kato
- Department of Physics, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - Shoyo Utsumi
- Department of Physics and Electronics, Osaka Metroplitan University, 1-1 Gakuencho, Sakai, Osaka 599-8531, Japan
| | - Hiroyasu Matsuura
- Department of Physics, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - Yoshihiko Togawa
- Department of Physics and Electronics, Osaka Prefecture University, 1-1 Gakuencho, Sakai, Osaka 599-8531, Japan
- Department of Physics and Electronics, Osaka Metroplitan University, 1-1 Gakuencho, Sakai, Osaka 599-8531, Japan
- Quantum Research Center for Chirality, Institute for Molecular Science, Okazaki 444-8585, Japan
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12
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Wang X, Yi C, Felser C. Chiral Quantum Materials: When Chemistry Meets Physics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2308746. [PMID: 38126622 DOI: 10.1002/adma.202308746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 12/01/2023] [Indexed: 12/23/2023]
Abstract
Chirality is a fundamental property of nature with relevance in biochemistry and physics, particularly in the field of catalysis. Understanding the mechanisms underlying chirality transfer is crucial for advancing the knowledge of chiral-related catalysis. Chiral quantum materials with intriguing chirality-dependent electronic properties, such as spin-orbital coupling (SOC) and exotic spin/orbital angular momentum (SAM/OAM), open novel avenues for linking solid-state topologies with chiral catalysis. In this review, the growth of topological homochiral crystals (THCs) is described, and their applications in heterogeneous catalysis, including hydrogen evolution reaction (HER), oxygen electrocatalysis, and asymmetric catalysis are summarized. A possible link between chirality-dependent electronic properties and heterogeneous catalysis is discussed. Finally, existing challenges in this field are highlighted, and a brief outlook on the impact of THCs on the overarching chemical-physical research is presented.
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Affiliation(s)
- Xia Wang
- Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany
| | - Changjiang Yi
- Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany
| | - Claudia Felser
- Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany
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13
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Fu Y, Liang F, He C, Yu H, Zhang H, Chen YF. Photon-phonon collaboratively pumped laser. Nat Commun 2023; 14:8110. [PMID: 38062008 PMCID: PMC10703827 DOI: 10.1038/s41467-023-43959-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 11/24/2023] [Indexed: 06/13/2024] Open
Abstract
In 1917, Einstein considered stimulated photon emission of electron radiation, offering the theoretical foundation for laser, technically achieved in 1960. However, thermal phonons along with heat creation of non-radiative transition, are ineffective, even playing a detrimental role in lasing efficiency. Here, we realize a photon-phonon collaboratively pumped laser enhanced by heat in a counterintuitive way. We observe a laser transition from phonon-free 1064 nm lasing to phonon-pumped 1176 nm lasing in Nd:YVO4 crystal, associated with the phonon-pumped population inversion under high temperatures. Moreover, an additional temperature threshold (Tth) appears besides the photon-pump power threshold (Pth), and a two-dimensional lasing phase diagram is verified with a general relation ruled by Pth = C/Tth (constant C upon loss for a given crystal), similar to Curie's Law. Our strategy will promote the study of laser physics via dimension extension, searching for highly efficient and low-threshold laser devices via this temperature degree of freedom.
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Affiliation(s)
- Yu Fu
- State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan, China
| | - Fei Liang
- State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan, China
| | - Cheng He
- National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University, Nanjing, China
| | - Haohai Yu
- State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan, China.
| | - Huaijin Zhang
- State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan, China.
| | - Yan-Feng Chen
- National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University, Nanjing, China.
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14
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Mella JD, Calvo HL, Foa Torres LEF. Entangled States Induced by Electron-Phonon Interaction in Two-Dimensional Materials. NANO LETTERS 2023. [PMID: 37984421 DOI: 10.1021/acs.nanolett.3c03316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
We report on the effects of electron-phonon interaction in materials such as graphene, showing that it enables the formation of a gap bridged by unique edge states. These states exhibit a distinctive locking among propagation direction, valley, and phonon mode, allowing for the generation of electron-phonon entangled states whose parts can be easily split. We discuss the effect of the chiral atomic motion in the zone boundary phonons leading to this effect. Our findings shed light on how to harness these unconventional states in quantum research.
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Affiliation(s)
- José D Mella
- Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, 8370448 Santiago, Chile
- School of Engineering and Sciences, Universidad Adolfo Ibáñez, 7941169 Santiago, Chile
| | - Hernán L Calvo
- Instituto de Física Enrique Gaviola (CONICET) and FaMAF, Universidad Nacional de Córdoba, 5000 Córdoba, Argentina
| | - Luis E F Foa Torres
- Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, 8370448 Santiago, Chile
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15
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Kaindl RA. Circling back to magnetism. Science 2023; 382:642-643. [PMID: 37943928 DOI: 10.1126/science.adl3521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Ultrafast experiments unveil control of magnetization with atomic rotations.
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Affiliation(s)
- Robert A Kaindl
- Department of Physics and Beus CXFEL Laboratory, Biodesign Institute, Arizona State University, Tempe, AZ, USA
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