Dynamic magnetoelastic boundary conditions and the pumping of phonons
Takuma Sato, Weichao Yu, Simon Streib, G. Bauer
Abstract
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 $\mathrm{magnet}|\mathrm{nonmagnet}$ bilayers and magnetic grains embedded in a nonmagnetic thin film, revealing a nontrivial magnetization angle dependence of acoustic phonon pumping.
Topics & Concepts
Condensed matter physicsPhononMagnetizationFormalism (music)FerromagnetismFerromagnetic resonanceBoundary value problemHeterojunctionMaterials scienceMagnetPhysicsMagnetic fieldQuantum mechanicsVisual artsArtMusicalMagnetic properties of thin filmsMagnetic Properties and ApplicationsTheoretical and Computational Physics