Dynamic Magnetoelastic Boundary Conditions and the Pumping of Phonons

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 magnet$|$nonmagnet bilayers and magnetic grains embedded in a nonmagnetic thin film, revealing a nontrivial magnetization angle dependence of acoustic phonon pumping.

17 pages, 5 figures

References in corpus (11)

• Hybrid quantum systems based on magnonics
• Magnon Polarons in the Spin Seebeck Effect
• Spin and orbital angular momenta of acoustic beams
• Spin Insulatronics
• Coherent elastic excitation of spin waves
• Observation of magnon-polarons in a uniaxial antiferromagnetic insulator
• Angular Momentum Conservation and Phonon Spin in Magnetic Insulators
• Difference between angular momentum and pseudoangular momentum
• Magnon-polarons in cubic collinear Antiferromagnets
• A tunable magneto-acoustic oscillator with low phase noise
• Magnetic field dependence of the nonlocal spin Seebeck effect in Pt/YIG/Pt systems at low temperatures

Cited by in corpus (10)

• Bright and dark states of two distant macrospins strongly coupled by phonons
• Magnetization dynamics affected by phonon pumping
• From Elastic Spin to Phonon Spin: Symmetry and Fundamental Relations
• Giant spin Nernst effect in a two-dimensional antiferromagnet due to magnetoelastic coupling-induced gaps and interband transitions between magnon-like bands
• Temperature dependence of the magnon-phonon interaction in high overtone bulk acoustic resonator-ferromagnetic thin film hybrids
• Chiral phonons and phononic birefringence in ferromagnetic metal - bulk acoustic resonator hybrids
• Acoustic Frequency Multiplication and Pure Second Harmonic Generation of Phonons by Magnetic Transducers
• Anomalous temperature dependence of phonon pumping by ferromagnetic resonance in Co/Pd multilayers with perpendicular anisotropy
• Investigation of Phonon Lifetimes and Magnon-Phonon Coupling in YIG/GGG Hybrid Magnonic Systems in the Diffraction Limited Regime
• Theory of polarization-dependent phonon pumping in ferromagnetic/non-magnetic bilayers