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Dynamic Magnetoelastic Boundary Conditions and the Pumping of Phonons

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arxiv 2104.05992 v2 pith:Y4PQLB3M submitted 2021-04-13 cond-mat.mes-hall

Dynamic Magnetoelastic Boundary Conditions and the Pumping of Phonons

classification cond-mat.mes-hall
keywords boundaryconditionsmagnetizationmagnetoelasticpumpingacousticangleapply
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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$\vert$nonmagnet bilayers and magnetic grains embedded in a nonmagnetic thin film, revealing a nontrivial magnetization angle dependence of acoustic phonon pumping.

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