Damped Topological Magnons in the Kagome-Lattice Ferromagnets
Abstract
In this paper, we demonstrate that interactions can substantially undermine the free-particle description of magnons in ferromagnets on geometrically frustrated lattices. The anharmonic coupling, facilitated by the Dzyaloshinskii-Moriya interaction, and a highly-degenerate two-magnon continuum yield a strong, non-perturbative damping of the high-energy magnon modes. We provide a detailed account of the effect for the S=1/2 ferromagnet on the kagomé lattice and propose further experiments.
- Authors:
-
- Univ. of California, Irvine, CA (United States)
- Publication Date:
- Research Org.:
- Univ. of California, Irvine, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- OSTI Identifier:
- 1784340
- Alternate Identifier(s):
- OSTI ID: 1330286
- Grant/Contract Number:
- FG02-04ER46174; PHY11-25915
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 117; Journal Issue: 18; 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
Citation Formats
Chernyshev, A. L., and Maksimov, P. A. Damped Topological Magnons in the Kagome-Lattice Ferromagnets. United States: N. p., 2016.
Web. doi:10.1103/physrevlett.117.187203.
Chernyshev, A. L., & Maksimov, P. A. Damped Topological Magnons in the Kagome-Lattice Ferromagnets. United States. https://doi.org/10.1103/physrevlett.117.187203
Chernyshev, A. L., and Maksimov, P. A. Thu .
"Damped Topological Magnons in the Kagome-Lattice Ferromagnets". United States. https://doi.org/10.1103/physrevlett.117.187203. https://www.osti.gov/servlets/purl/1784340.
@article{osti_1784340,
title = {Damped Topological Magnons in the Kagome-Lattice Ferromagnets},
author = {Chernyshev, A. L. and Maksimov, P. A.},
abstractNote = {In this paper, we demonstrate that interactions can substantially undermine the free-particle description of magnons in ferromagnets on geometrically frustrated lattices. The anharmonic coupling, facilitated by the Dzyaloshinskii-Moriya interaction, and a highly-degenerate two-magnon continuum yield a strong, non-perturbative damping of the high-energy magnon modes. We provide a detailed account of the effect for the S=1/2 ferromagnet on the kagomé lattice and propose further experiments.},
doi = {10.1103/physrevlett.117.187203},
journal = {Physical Review Letters},
number = 18,
volume = 117,
place = {United States},
year = {Thu Oct 27 00:00:00 EDT 2016},
month = {Thu Oct 27 00:00:00 EDT 2016}
}
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