1
|
Liu S, Wang Q, Long MQ, Wang YP. Theoretical study of the nonlinear magnon-phonon coupling in CoF 2. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:355801. [PMID: 38768607 DOI: 10.1088/1361-648x/ad4dfa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 05/20/2024] [Indexed: 05/22/2024]
Abstract
The coupling and interplay between magnon and phonon are important topics for spintronics and magnonics. In this work we studied the nonlinear magnon-phonon coupling in CoF2. First-principles calculations demonstrate that the antiferromagnetic resonance magnon drives a phonon with B1gcharacter; the oscillating driving force has a frequency twice of that of the magnon. Comparing with similar materials indicates a strong correlation between the strength of nonlinear magnon-phonon coupling and the orbital magnetic moment of the magnetic ion. This work pave the way for theoretical study of nonlinear magnon-phonon coupling.
Collapse
Affiliation(s)
- Shuang Liu
- School of Physics, Central South University, Changsha, People's Republic of China
| | - Qian Wang
- School of Physics, Central South University, Changsha, People's Republic of China
| | - Meng-Qiu Long
- School of Physics, Central South University, Changsha, People's Republic of China
| | - Yun-Peng Wang
- School of Physics, Central South University, Changsha, People's Republic of China
| |
Collapse
|
2
|
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.
Collapse
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
| |
Collapse
|
3
|
Kim HL, Saito T, Yang H, Ishizuka H, Coak MJ, Lee JH, Sim H, Oh YS, Nagaosa N, Park JG. Thermal Hall effects due to topological spin fluctuations in YMnO 3. Nat Commun 2024; 15:243. [PMID: 38172119 PMCID: PMC10764330 DOI: 10.1038/s41467-023-44448-9] [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: 05/06/2023] [Accepted: 12/12/2023] [Indexed: 01/05/2024] Open
Abstract
The thermal Hall effect in magnetic insulators has been considered a powerful method for examining the topological nature of charge-neutral quasiparticles such as magnons. Yet, unlike the kagome system, the triangular lattice has received less attention for studying the thermal Hall effect because the scalar spin chirality cancels out between adjacent triangles. However, such cancellation cannot be perfect if the triangular lattice is distorted. Here, we report that the trimerized triangular lattice of multiferroic hexagonal manganite YMnO3 produces a highly unusual thermal Hall effect under an applied magnetic field. Our theoretical calculations demonstrate that the thermal Hall conductivity is related to the splitting of the otherwise degenerate two chiralities of its 120˚ magnetic structure. Our result is one of the most unusual cases of topological physics due to this broken Z2 symmetry of the chirality in the supposedly paramagnetic state of YMnO3, due to strong topological spin fluctuations with the additional intricacy of a Dzyaloshinskii-Moriya interaction.
Collapse
Affiliation(s)
- Ha-Leem Kim
- Center for Quantum Materials & Department of Physics and Astronomy, Seoul National University, Seoul, 08826, Republic of Korea
- Center for Correlated Electron Systems, Institute for Basic Science, Seoul, 08826, Republic of Korea
| | - Takuma Saito
- Department of Applied Physics, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Heejun Yang
- Center for Quantum Materials & Department of Physics and Astronomy, Seoul National University, Seoul, 08826, Republic of Korea
- Center for Correlated Electron Systems, Institute for Basic Science, Seoul, 08826, Republic of Korea
| | - Hiroaki Ishizuka
- Department of Physics, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8551, Japan
| | - Matthew John Coak
- Center for Quantum Materials & Department of Physics and Astronomy, Seoul National University, Seoul, 08826, Republic of Korea
- Center for Correlated Electron Systems, Institute for Basic Science, Seoul, 08826, Republic of Korea
- Department of Physics, University of Warwick, Coventry, CV4 7AL, UK
| | - Jun Han Lee
- Department of Physics, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
| | - Hasung Sim
- Center for Quantum Materials & Department of Physics and Astronomy, Seoul National University, Seoul, 08826, Republic of Korea
- Center for Correlated Electron Systems, Institute for Basic Science, Seoul, 08826, Republic of Korea
| | - Yoon Seok Oh
- Department of Physics, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
| | - Naoto Nagaosa
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama, 351-0198, Japan.
| | - Je-Geun Park
- Center for Quantum Materials & Department of Physics and Astronomy, Seoul National University, Seoul, 08826, Republic of Korea.
- Center for Correlated Electron Systems, Institute for Basic Science, Seoul, 08826, Republic of Korea.
- Institute of Applied Physics, Seoul National University, Seoul, 08826, Republic of Korea.
| |
Collapse
|
4
|
Hernandez FG, Baydin A, Chaudhary S, Tay F, Katayama I, Takeda J, Nojiri H, Okazaki AK, Rappl PH, Abramof E, Rodriguez-Vega M, Fiete GA, Kono J. Observation of interplay between phonon chirality and electronic band topology. SCIENCE ADVANCES 2023; 9:eadj4074. [PMID: 38100589 PMCID: PMC10848715 DOI: 10.1126/sciadv.adj4074] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 11/15/2023] [Indexed: 12/17/2023]
Abstract
The recently demonstrated chiral modes of lattice motion carry angular momentum and therefore directly couple to magnetic fields. Notably, their magnetic moments are predicted to be strongly influenced by electronic contributions. Here, we have studied the magnetic response of transverse optical phonons in a set of Pb1-xSnxTe films, which is a topological crystalline insulator for x > 0.32 and has a ferroelectric transition at an x-dependent critical temperature. Polarization-dependent terahertz magnetospectroscopy measurements revealed Zeeman splittings and diamagnetic shifts, demonstrating a large phonon magnetic moment. Films in the topological phase exhibited phonon magnetic moment values that were larger than those in the topologically trivial samples by two orders of magnitude. Furthermore, the sign of the effective phonon g-factor was opposite in the two phases, a signature of the topological transition according to our model. These results strongly indicate the existence of interplay between the magnetic properties of chiral phonons and the topology of the electronic band structure.
Collapse
Affiliation(s)
| | - Andrey Baydin
- Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA
- Smalley-Curl Institute, Rice University, Houston, TX 77005, USA
| | - Swati Chaudhary
- Department of Physics, The University of Texas at Austin, Austin, TX 78712, USA
- Department of Physics, Northeastern University, Boston, MA 02115, USA
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Fuyang Tay
- Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA
- Applied Physics Graduate Program, Smalley-Curl Institute, Rice University, Houston, TX 77005, USA
| | - Ikufumi Katayama
- Department of Physics, Graduate School of Engineering Science, Yokohama National University, Yokohama 240-8501, Japan
| | - Jun Takeda
- Department of Physics, Graduate School of Engineering Science, Yokohama National University, Yokohama 240-8501, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Anderson K. Okazaki
- Instituto Nacional de Pesquisas Espaciais, São José dos Campos, SP 12201-970, Brazil
| | - Paulo H. O. Rappl
- Instituto Nacional de Pesquisas Espaciais, São José dos Campos, SP 12201-970, Brazil
| | - Eduardo Abramof
- Instituto Nacional de Pesquisas Espaciais, São José dos Campos, SP 12201-970, Brazil
| | - Martin Rodriguez-Vega
- Department of Physics, The University of Texas at Austin, Austin, TX 78712, USA
- Department of Physics, Northeastern University, Boston, MA 02115, USA
| | - Gregory A. Fiete
- Department of Physics, Northeastern University, Boston, MA 02115, USA
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Junichiro Kono
- Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA
- Smalley-Curl Institute, Rice University, Houston, TX 77005, USA
- Department of Physics and Astronomy, Rice University, Houston, TX 77005, USA
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX 77005, USA
| |
Collapse
|