Cavity magnomechanical coupling with coupled magnon modes in a synthetic antiferromagnet
arXiv:2304.09458 · doi:10.1103/PhysRevB.108.064415
Abstract
On-chip cavity magnomechanics is an emerging field exploring acoustic and magnonic functionalities of various ferromagnetic materials and structures using strongly confined phonons. It is expected that such cavity magnomechanics can be extended to multilayer ferromagnets, especially synthetic antiferromagnets (SAFs) that exhibit zero net magnetization through interlayer exchange coupling. However, the conventional theoretical framework for a single ferromagnet cannot be used directly because of the antiferromagnetic magnetization dynamics associated with the interlayer exchange coupling. In this paper, we theoretically investigate phonon-magnon coupling with a three-layer SAF. Our formulation of the phonon-magnon coupling constants reveals that the acoustic (optical) magnon mode dominantly couples to the cavity phonon when the magnetization angles in the two ferromagnetic layers are antiparallel (orthogonal). Moreover, numerical calculations including the effects of dipole-dipole interactions and in-plane uniaxial magnetic anisotropy allow us to predict phonon frequency shifts and linewidth broadening that can be detected in experiments. These theoretical insights would greatly help us to make a strategy for bringing the system into the strong coupling regime and to devise novel control protocols in analogy to cavity quantum electrodynamics and cavity optomechanics.
References in corpus (31)
- Cavity Optomechanics
- Artificial gauge potentials for neutral atoms
- Hybrid quantum systems based on magnonics
- Magnon-photon-phonon entanglement in cavity magnomechanics
- Experimental realization of optomechanically induced non-reciprocity
- Acoustically driven ferromagnetic resonance
- Surface Acoustic Wave-Driven Ferromagnetic Resonance in Nickel Thin Films: Theory and Experiment
- Mechanical Bistability in Kerr-modified Cavity Magnomechanics
- Magnon Polarons in the Spin Seebeck Effect
- Nonreciprocal surface acoustic wave propagation via magneto-rotation coupling
- Coherent long-range transfer of angular momentum between magnon Kittel modes by phonons
- Dynamical Backaction Magnomechanics
- Synthetic Gauge Fields for Vibrational Excitations of Trapped ions
- Surface acoustic wave driven ferromagnetic resonance in (Ga,Mn)(As,P) epilayers
- Phononic band structure engineering for high-Q gigahertz surface acoustic wave resonators on lithium niobate
- Tunable magnon-magnon coupling in synthetic antiferromagnets
- Magnetization control by angular momentum transfer from surface acoustic wave to ferromagnetic spin moments
- Multimode optomechanical dynamics in a cavity with avoided crossings
- Large non-reciprocal propagation of surface acoustic waves in epitaxial ferromagnetic/semiconductor hybrid structures
- Cavity magnomechanics with surface acoustic waves
- Cavity magnomechanical storage and retrieval of quantum states
- Magnon-Phonon Quantum Correlation Thermometry
- Voltage driven, local, and efficient excitation of nitrogen-vacancy centers in diamond
- Symmetry of the Magnetoelastic Interaction of Rayleigh and Shear Horizontal Magnetoacoustic Waves in Nickel Thin Films on LiTaO
- Antiferromagnetic cavity optomagnonics
- Large surface acoustic wave nonreciprocity in synthetic antiferromagnets
- Dynamical Backaction Evading Magnomechanics
- High Quality Factor Surface Fabry-Perot Cavity of Acoustic Waves
- Enhancement of acoustic spin pumping by acoustic distributed Bragg reflector cavity
- Surface acoustic wave coupled to magnetic resonance on a multiferroic CuBO
- Phononic-crystal cavity magnomechanics