Cavity magnomechanics with surface acoustic waves

Abstract

Magnons, namely spin waves, are collective spin excitations in ferromagnets, and their control through coupling with other excitations is a key technology for future hybrid spintronic devices. Although strong coupling has been demonstrated with microwave photonic structures, an alternative approach permitting high density integration and minimized electromagnetic crosstalk is required. Here we report a planar cavity magnomechanical system, where the cavity of surface acoustic waves enhances the spatial and spectral power density to thus implement magnon-phonon coupling at room temperature. Excitation of spin-wave resonance involves significant acoustic power absorption, whereas the collective spin motion reversely exerts a back-action force on the cavity dynamics. The cavity frequency and quality-factor are significantly modified by the back-action effect, and the resultant cooperativity exceeds unity, suggesting coherent interaction between magnons and phonons. The demonstration of a chip-scale magnomechanical system paves the way to the development of novel spin-acoustic technologies for classical and quantum applications.

9 pages, 5 figures

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Cited by in corpus (19)

• Cavity magnomechanics: from classical to quantum
• Nonreciprocal Photon-Phonon Entanglement in Kerr-Modified Spinning Cavity Magnomechanics
• Entangling ferrimagnetic magnons with an atomic ensemble via opto-magnomechanics
• Large surface acoustic wave nonreciprocity in synthetic antiferromagnets
• Polaromechanics: cavity-magnon polaritons strongly coupled to phonons
• Dynamical Backaction Evading Magnomechanics
• Optimal broad-band frequency conversion via a magnomechanical transducer
• Magnon-phonon coupling of synthetic antiferromagnets in a surface acoustic wave cavity resonator
• Spatiotemporal visualization of a surface acoustic wave coupled to magnons across a submillimeter-long sample by pulsed laser interferometry
• Phononic-crystal cavity magnomechanics
• Cavity magnomechanical coupling with coupled magnon modes in a synthetic antiferromagnet
• Chiral phonons and phononic birefringence in ferromagnetic metal - bulk acoustic resonator hybrids
• Chiral current in Floquet cavity-magnonics
• Temperature dependence of the magnon-phonon interaction in high overtone bulk acoustic resonator-ferromagnetic thin film hybrids
• Classical and quantum theory of magnonic and magnetoelastic nonlinear dynamics in continuum geometries
• Phase-controlled robust tripartite quantum entanglement in cavity-magnon optomechanics
• Manipulation of magnetic systems by quantized surface acoustic wave via piezomagnetic effect
• Resonant phonon-magnon interactions in free-standing metal-ferromagnet multilayer structures
• On-chip all-electrical determination of the magnetoelastic coupling constant of magnetic heterostructures