Theory of Intrinsic Phonon Thermal Hall Effect in $α$-RuCl$_3$
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arXiv
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| Hauptverfasser: | , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866914545523490816 |
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| author | Dhakal, Ramesh Kaib, David A. S. Choi, Kate Biswas, Sananda Valenti, Roser Winter, Stephen M. |
| author_facet | Dhakal, Ramesh Kaib, David A. S. Choi, Kate Biswas, Sananda Valenti, Roser Winter, Stephen M. |
| contents | We apply a recently developed first-principles based approach for treating generic spin-phonon couplings in materials with strong spin-orbit coupling to study $α$-RuCl$_3$. Of particular focus is the potential for this material to exhibit a phonon thermal Hall effect induced by spin-phonon interactions. We find that spin-orbit coupling significantly enriches the form of these interactions, and imbues them with chirality that is conducive to generating finite phonon Berry curvatures. We show that this leads to a phonon thermal Hall effect that qualitatively reproduces the measured field dependence of $κ_{xy}$ without requiring a field-induced spin liquid. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_00660 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Theory of Intrinsic Phonon Thermal Hall Effect in $α$-RuCl$_3$ Dhakal, Ramesh Kaib, David A. S. Choi, Kate Biswas, Sananda Valenti, Roser Winter, Stephen M. Strongly Correlated Electrons We apply a recently developed first-principles based approach for treating generic spin-phonon couplings in materials with strong spin-orbit coupling to study $α$-RuCl$_3$. Of particular focus is the potential for this material to exhibit a phonon thermal Hall effect induced by spin-phonon interactions. We find that spin-orbit coupling significantly enriches the form of these interactions, and imbues them with chirality that is conducive to generating finite phonon Berry curvatures. We show that this leads to a phonon thermal Hall effect that qualitatively reproduces the measured field dependence of $κ_{xy}$ without requiring a field-induced spin liquid. |
| title | Theory of Intrinsic Phonon Thermal Hall Effect in $α$-RuCl$_3$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2407.00660 |