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Title: 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:
 [1];  [1]
  1. 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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Works referenced in this record:

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  • DOI: 10.1103/physrevx.8.011010

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Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnet
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High-field expansion approach to kagome antiferromagnets with Dzyaloshinskii-Moriya interactions
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Topological magnon amplification
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  • Malz, Daniel; Knolle, Johannes; Nunnenkamp, Andreas
  • Apollo - University of Cambridge Repository
  • DOI: 10.17863/cam.56893

Topological magnon amplification
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Topological Spin Excitations in Honeycomb Ferromagnet CrI 3
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Topological magnon amplification.
text, January 2019

  • Malz, Daniel; Knolle, Johannes; Nunnenkamp, Andreas
  • Apollo - University of Cambridge Repository
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