Damped Topological Magnons in the Kagome-Lattice Ferromagnets
Journal Article
·
· Physical Review Letters
- 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
Cited by: 54 works
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