Magnon Landau Levels and Spin Responses in Antiferromagnets
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. Here, our studies show that AFM insulators exhibit rich physics associated with topological magnon excitations.
- Publication Date:
- Research Org.:
- Univ. of Nebraska, Lincoln, NE (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1755211
- Grant/Contract Number:
- SC0014189
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 125; Journal Issue: 25; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Hall effect; Magnetic texture; Magnons; Spintronics; Topological insulators
Citation Formats
Li, Bo, and Kovalev, Alexey. Magnon Landau Levels and Spin Responses in Antiferromagnets. United States: N. p., 2020.
Web. doi:10.1103/PhysRevLett.125.257201.
Li, Bo, & Kovalev, Alexey. Magnon Landau Levels and Spin Responses in Antiferromagnets. United States. https://doi.org/10.1103/PhysRevLett.125.257201
Li, Bo, and Kovalev, Alexey. Mon .
"Magnon Landau Levels and Spin Responses in Antiferromagnets". United States. https://doi.org/10.1103/PhysRevLett.125.257201. https://www.osti.gov/servlets/purl/1755211.
@article{osti_1755211,
title = {Magnon Landau Levels and Spin Responses in Antiferromagnets},
author = {Li, Bo and Kovalev, Alexey},
abstractNote = {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. Here, our studies show that AFM insulators exhibit rich physics associated with topological magnon excitations.},
doi = {10.1103/PhysRevLett.125.257201},
journal = {Physical Review Letters},
number = 25,
volume = 125,
place = {United States},
year = {Mon Dec 14 00:00:00 EST 2020},
month = {Mon Dec 14 00:00:00 EST 2020}
}
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