Magnon-phonon interactions in magnetic insulators

Simon Streib, Nicolas Vidal-Silva, Ka Shen, Gerrit E.W. Bauer

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We address the theory of magnon-phonon interactions and compute the corresponding quasiparticle and transport lifetimes in magnetic insulators, with a focus on yttrium iron garnet at intermediate temperatures from anisotropy- and exchange-mediated magnon-phonon interactions, the latter being derived from the volume dependence of the Curie temperature. We find in general weak effects of phonon scattering on magnon transport and the Gilbert damping of the macrospin Kittel mode. The magnon transport lifetime differs from the quasiparticle lifetime at shorter wavelengths.

Original languageEnglish
Article number184442
JournalPhysical Review B
Volume99
Issue number18
DOIs
Publication statusPublished - 2019 May 28

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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