Vu, D.D., Nelson, R.A., Wooten, B.L. et al. (3 more authors) (Cover date: 1 October 2023) Magnon gap mediated lattice thermal conductivity in MnBi₂Te₄. Physical Review B, 108 (14). 144402. ISSN 1098-0121
Abstract
In magnetic materials with strong spin-lattice coupling, magnon-phonon interactions can change the sensitivity of the lattice thermal conductivity in an applied magnetic field. Applying an out-of-plane magnetic field to change MnBi₂Te₄ between antiferromagnetic (AFM), canted antiferromagnetic (CAFM), and ferromagnetic (FM) phases, we controlled the lattice thermal conductivity, generating both a positive and a negative magnetic field dependence. The in-plane thermal conductivity decreases with field in the AFM phase, remains approximately constant in the CAFM phase, and increases with field in the FM phase. We explain this in terms of the field-induced changes of the magnon gap which modifies magnon-phonon scattering. We also report thermal Hall data measured in the same configuration.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2023 American Physical Society. This is an author produced version of an article accepted for publication in Physical Review B. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Condensed Matter (Leeds) |
Funding Information: | Funder Grant number Royal Society URF\R1\180333 |
Depositing User: | Symplectic Publications |
Date Deposited: | 09 Oct 2023 14:14 |
Last Modified: | 26 Oct 2023 15:12 |
Status: | Published |
Publisher: | American Physical Society |
Identification Number: | 10.1103/PhysRevB.108.144402 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:203188 |