Dynamic magnetoelastic boundary conditions and the pumping of phonons

Takuma Sato, Weichao Yu, Simon Streib, Gerrit E. W. Bauer

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We derive boundary conditions at the interfaces of magnetoelastic heterostructures under ferromagnetic resonance for arbitrary magnetization directions and interface shapes. We apply our formalism to magnet|nonmagnet bilayers and magnetic grains embedded in a nonmagnetic thin film, revealing a nontrivial magnetization angle dependence of acoustic phonon pumping.

Original languageEnglish
Article number014403
JournalPhysical Review B
Issue number1
Publication statusPublished - 1-Jul-2021

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