High-frequency magnetoacoustic resonance through strain-spin coupling in perpendicular magnetic multilayers
Delin Zhang, Jie Zhu, Tao Qu, Dustin M. Lattery, R. H. Victora, Xiaojia Wang, Jian‐Ping Wang
Abstract
multilayers, reaching frequencies in the extremely high frequency (EHF) band, e.g., 60 GHz. We propose a theoretical model to explain the physical mechanism underlying the strain-spin interaction. Our model explains the amplitude increase of the magnetoacoustic resonance state with time and quantitatively predicts the composition of the combined strain-spin state near the resonance. We also detail its precise dependence on the magnetostriction. The results of this work offer a potential pathway to manipulating both the magnitude and timing of EHF and strongly coupled magnon-phonon excitations.
Topics & Concepts
Condensed matter physicsCoupling (piping)MagnetostrictionResonance (particle physics)MagnonPhononExcitationPerpendicularSpin (aerodynamics)PhysicsAmplitudeFemtosecondStrain (injury)Materials scienceLaserMagnetic fieldAtomic physicsOpticsFerromagnetismGeometryThermodynamicsMedicineMetallurgyQuantum mechanicsInternal medicineMathematicsMagnetic properties of thin filmsMagneto-Optical Properties and ApplicationsMagnetic Properties and Applications