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Spin-Phonon Coupling in Transition Metal Insulators II: Spin-Orbital Moments, Chiral Phonons and Application to $\alpha$-RuCl$_3$
- Publication Year :
- 2024
-
Abstract
- We apply a recently developed first-principles based approach for treating generic spin-phonon couplings in materials with strong spin-orbit coupling to study $\alpha$-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 $\kappa_{xy}$ without requiring a field-induced spin liquid.<br />Comment: 20 pages, 9 figures including supplemental material
- Subjects :
- Condensed Matter - Strongly Correlated Electrons
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2407.00660
- Document Type :
- Working Paper