Nonreciprocal Dzyaloshinskii-Moriya magnetoacoustic waves

Abstract

We study the interaction of surface acoustic waves with spin waves in ultra-thin CoFeB/Pt bilayers. Due to the interfacial Dzyaloshinskii-Moriya interaction (DMI), the spin wave dispersion is non-degenerate for oppositely propagating spin waves in CoFeB/Pt. In combination with the additional nonreciprocity of the magnetoacoustic coupling itself, highly nonreciprocal acoustic wave transmission through the magnetic film is observed. We systematically characterize the magnetoacoustic wave propagation in a thickness series of CoFeB($d$)/Pt samples as a function of magnetic field magnitude and direction, and at frequencies up to 7 GHz. We quantitatively model our results to extract the strength of the DMI and magnetoacoustic driving fields.

arXiv comment6 pages, 4 figures

References in corpus (20)

• Skyrmion Lattice in a Chiral Magnet
• Enhanced Gilbert Damping in Thin Ferromagnetic Films
• Acoustically driven ferromagnetic resonance
• Spectroscopic confirmation of linear relation between Heisenberg- and interfacial Dzyaloshinskii-Moriya-exchange in polycrystalline metal films
• Spin-Wave Propagation in the Presence of Interfacial Dzyaloshinskii-Moriya Interaction
• Thickness dependence of the interfacial Dzyaloshinskii-Moriya interaction in inversion symmetry broken systems
• Surface Acoustic Wave-Driven Ferromagnetic Resonance in Nickel Thin Films: Theory and Experiment
• Interfacial Dzyaloshinskii-Moriya interaction in Pt/CoFeB films: effect of the heavy-metal thickness
• Nonreciprocal surface acoustic wave propagation via magneto-rotation coupling
• Intrinsic and non-local Gilbert damping in polycrystalline nickel studied by Ti:Sapphire laser fs spectroscopy
• Nonreciprocal propagation of surface acoustic wave in Ni/LiNbO3
• Frequency non-reciprocity of surface spin wave in Permalloy thin films
• Traveling surface spin-wave resonance spectroscopy using surface acoustic waves
• Chiral Phonon Transport Induced by Topological Magnons
• Large non-reciprocal propagation of surface acoustic waves in epitaxial ferromagnetic/semiconductor hybrid structures
• Thickness-Dependent Magnetoelasticity and its Effects on Perpendicular Magnetic Anisotropy in Ta|CoFeB|MgO Thin Films
• Sign of inverse spin Hall voltages generated by ferromagnetic resonance and temperature gradients in yttrium iron garnet|platinum bilayers
• High Spin-Wave Propagation Length Consistent with Low Damping in a Metallic Ferromagnet
• Multi-harmonic Quantum Dot Optomechanics in fused LiNbO${}_3$-(Al)GaAs hybrids
• Magnetoelasticity of $\mathrm{C}{\mathrm{o}}_{25}\mathrm{F}{\mathrm{e}}_{75}$ thin films

Cited by in corpus (29)

• Chirality as Generalized Spin-Orbit Interaction in Spintronics
• Advances in coherent coupling between magnons and acoustic phonons
• Ordered creation and motion of skyrmions with surface acoustic wave
• Symmetry of the Magnetoelastic Interaction of Rayleigh and Shear Horizontal Magnetoacoustic Waves in Nickel Thin Films on LiTaO${}_3$
• Large surface acoustic wave nonreciprocity in synthetic antiferromagnets
• Observation of nonreciprocal magnon Hanle effect
• Nonreciprocal magnetoacoustic waves in synthetic antiferromagnets with Dzyaloshinskii-Moriya interaction
• Fully Resonant Magneto-elastic Spin-wave Excitation by Surface Acoustic Waves under Conservation of Energy and Linear Momentum
• Dynamic Magnetoelastic Boundary Conditions and the Pumping of Phonons
• Double accumulation and anisotropic transport of magneto-elastic bosons in yttrium iron garnet films
• Spatiotemporal visualization of a surface acoustic wave coupled to magnons across a submillimeter-long sample by pulsed laser interferometry
• Interference of co-propagating Rayleigh and Sezawa waves observed with micro-focussed Brillouin Light Scattering Spectroscopy
• Symmetry and nonlinearity of spin wave resonance excited by focused surface acoustic waves
• Rotationally invariant formulation of spin-lattice coupling in multi-scale modeling
• Symmetry of the coupling between surface acoustic waves and spin waves in synthetic antiferromagnets
• Temperature dependence of the magnon-phonon interaction in high overtone bulk acoustic resonator-ferromagnetic thin film hybrids
• Giant spin-vorticity coupling excited by shear-horizontal surface acoustic waves
• Magnon-polaron control in a surface magnetoacoustic wave resonator
• Acoustic Frequency Multiplication and Pure Second Harmonic Generation of Phonons by Magnetic Transducers
• Generation of gigahertz frequency surface acoustic waves in YIG/ZnO heterostructures
• Forward volume magnetoacoustic spin wave excitation with micron-scale spatial resolution
• Efficient spin-wave excitation by surface acoustic waves in ultra-low damping YIG/ZnO-heterostructures
• Spin-lattice couplings in $3d$ ferromagnets: analysis from first-principles
• Time-domain extreme ultraviolet diffuse scattering spectroscopy of nanoscale surface phonons
• Nonreciprocal Spin Waves in Nanoscale Domain Walls Detected by Scanning X-ray Microscopy in Perpendicular Magnetic Anisotropic Fe/Gd Multilayers
• Spin hydrodynamic generation in unsteady flows
• Asymmetric defect distribution generates bulk Dzyaloshinskii-Moriya interaction in Pt/Co/Pt
• Magnetically Programmable Surface Acoustic Wave Filters: Device Concept and Predictive Modeling
• On-chip all-electrical determination of the magnetoelastic coupling constant of magnetic heterostructures