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Title: Damped Topological Magnons in the Kagome-Lattice Ferromagnets

Journal Article · · Physical Review Letters
 [1];  [1]
  1. Univ. of California, Irvine, CA (United States)

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.

Research Organization:
Univ. of California, Irvine, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
FG02-04ER46174; PHY11-25915
OSTI ID:
1784340
Alternate ID(s):
OSTI ID: 1330286
Journal Information:
Physical Review Letters, Vol. 117, Issue 18; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 54 works
Citation information provided by
Web of Science

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Cited By (25)

Magnon Spin-Momentum Locking: Various Spin Vortices and Dirac magnons in Noncollinear Antiferromagnets journal September 2017
Topological Magnons in Kitaev Magnets at High Fields text January 2018
Face-centered cubic MoS 2 : a novel superconducting three-dimensional crystal more stable than layered T-MoS 2 journal January 2018
Topologically protected unidirectional edge spin waves and beam splitter journal January 2017
Dirac Magnons in Honeycomb Ferromagnets text January 2018
Topological Magnonics: A Paradigm for Spin-Wave Manipulation and Device Design journal February 2018
Non-Hermitian topology of spontaneous magnon decay journal September 2019
Photoinduced Topological Phase Transitions in Topological Magnon Insulators journal March 2018
Strain-induced topological magnon phase transitions: applications to kagome-lattice ferromagnets journal May 2018
Strain-Induced Topological Magnon Phase Transitions: Applications to Kagome-Lattice Ferromagnets text January 2018
Topological magnon bands for magnonics journal May 2019
Magnon thermal Hall effect in kagome antiferromagnets with Dzyaloshinskii-Moriya interactions journal September 2018
Dirac Magnons in Honeycomb Ferromagnets journal January 2018
Non-Hermitian topology of spontaneous magnon decay text January 2019
Topological magnons in Kitaev magnets at high fields journal August 2018
Topological excitations in the ferromagnetic Kitaev-Heisenberg model journal August 2018
Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnet journal January 2020
High-Field Expansion Approach to Kagome Antiferromagnets with Dzyaloshinskii-Moriya Interactions text January 2019
Z 2 topological quantum paramagnet on a honeycomb bilayer journal July 2019
High-field expansion approach to kagome antiferromagnets with Dzyaloshinskii-Moriya interactions journal September 2019
Topological magnon amplification text January 2019
Topological magnon amplification journal September 2019
Topological Spin Excitations in Honeycomb Ferromagnet CrI 3 journal November 2018
Topological excitations in the ferromagnetic Kitaev-Heisenberg model text January 2018
Topological magnon amplification. text January 2019

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