Magnon-phonon interactions in magnetic insulators

Title

Magnon-phonon interactions in magnetic insulators

 Author

Streib, S.D. (TU Delft QN/Bauer Group; Kavli institute of nanoscience Delft)
Vidal-Silva, Nicolas (Universidad de Santiago de Chile)
Shen, Ka (Beijing Normal University)
Bauer, G.E. (TU Delft QN/Bauer Group; Kavli institute of nanoscience Delft; Beijing Normal University; Tohoku University) ORCID 0000-0002-3615-8673

 Date

2019

 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.


 To reference this document use:

http://resolver.tudelft.nl/uuid:bace3492-c056-4261-8f87-02c97807d980

 DOI

https://doi.org/10.1103/PhysRevB.99.184442

 ISSN

2469-9950

 Source

Physical Review B, 99 (18)

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2019 S.D. Streib, Nicolas Vidal-Silva, Ka Shen, G.E. Bauer
Files
PDF PhysRevB.99.184442.pdf 1.39 MB
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