Physics and Astronomy, Department of
Department of Physics and Astronomy: Faculty Publications
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ORCID IDs
Document Type
Article
Date of this Version
2020
Citation
Phys. Rev. Lett. 125, 257201 (2020)
DOI:https://doi.org/10.1103/PhysRevLett.125.257201
Abstract
We study gauge fields produced by gradients of the Dzyaloshinskii-Moriya interaction and propose a model of an AFM topological insulator of magnons. In the long wavelength limit, the Landau levels induced by the inhomogeneous Dzyaloshinskii-Moriya interaction exhibit relativistic physics described by the Klein-Gordon equation. The spin Nernst response due to the formation of magnonic Landau levels is compared to similar topological responses in skyrmion and vortex-antivortex crystal phases of AFM insulators. Our studies show that AFM insulators exhibit rich physics associated with topological magnon excitations.
Comments
© 2020 American Physical Society. Used by permission.