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Theory of magnon-skyrmion scattering in chiral magnets

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Iwasaki, Junichi, Beekman, Aron J., Nagaosa, Naoto·2014·Physical Review B

Abstract

We study theoretically the dynamics of magnons in the presence of a single skyrmion in chiral magnets featuring Dzyaloshinskii-Moriya interaction. We show by micromagnetic simulations that the scattering process of magnons by a skyrmion can be clearly defined although both originate in the common spins. We find that (i) the magnons are deflected by a skyrmion, with the angle strongly dependent on the magnon wave number due to the effective magnetic field of the topological texture, and (ii) the skyrmion motion is driven by magnon scattering through exchange of the momenta between the magnons and a skyrmion: the total momentum is conserved. This demonstrates that the skyrmion has a well-defined, though highly non-Newtonian, momentum.

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Metadata

Authors
Iwasaki, J., Beekman, A. J., & Nagaosa, N.
Venue
Physical Review B
Published
2014-02-14
Volume
89
Issue
6
ISSN
  • 1098-0121 (ISSN-L)
  • 1550-235X
OpenAlex
W2117289906
Cited by
180
References
0
FWCI
7.15
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Theory of magnon-skyrmion scattering in chiral magnets. https://app.cochat.ai/papers/10.1103/physrevb.89.064412
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Iwasaki, J., Beekman, A. J., & Nagaosa, N. (2014). Theory of magnon-skyrmion scattering in chiral magnets. Physical Review B. https://doi.org/10.1103/physrevb.89.064412

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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.