Spin Waves and Spin Currents in Magnon-Phonon Composite Resonator Induced by Acoustic Waves of Various Polarizations

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Auteurs principaux: Alekseev, S. G., Polzikova, N. I., Luzanov, V. A., Nikitov, S. A.
Format: Preprint
Publié: 2024
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author Alekseev, S. G.
Polzikova, N. I.
Luzanov, V. A.
Nikitov, S. A.
author_facet Alekseev, S. G.
Polzikova, N. I.
Luzanov, V. A.
Nikitov, S. A.
contents In this work, we present the results of a systematic experimental study of linear and parametric spin wave resonant excitation accompanied by spin currents (spin pumping) in a multifrequency composite bulk acoustic wave resonator with a ZnO-YIG-GGG-YIG/Pt structure. The features of magnetic dynamics excitation in YIG films due to magnetoelastic coupling with acoustic thickness modes of various polarizations are studied. Acoustic spin waves and spin pumping are detected by simultaneous frequency-field mapping of the inverse spin Hall effect voltage and the resonant frequencies of thickness extensional modes. In the parametric range of frequencies and fields, acoustic spin pumping induced by both shear and longitudinal polarization modes was observed. Linear acoustic spin waves are excited only by shear thickness extensional modes because longitudinal acoustic waves do not couple with the magnetic subsystem in linear regime.
format Preprint
id arxiv_https___arxiv_org_abs_2403_06274
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Spin Waves and Spin Currents in Magnon-Phonon Composite Resonator Induced by Acoustic Waves of Various Polarizations
Alekseev, S. G.
Polzikova, N. I.
Luzanov, V. A.
Nikitov, S. A.
Mesoscale and Nanoscale Physics
Applied Physics
In this work, we present the results of a systematic experimental study of linear and parametric spin wave resonant excitation accompanied by spin currents (spin pumping) in a multifrequency composite bulk acoustic wave resonator with a ZnO-YIG-GGG-YIG/Pt structure. The features of magnetic dynamics excitation in YIG films due to magnetoelastic coupling with acoustic thickness modes of various polarizations are studied. Acoustic spin waves and spin pumping are detected by simultaneous frequency-field mapping of the inverse spin Hall effect voltage and the resonant frequencies of thickness extensional modes. In the parametric range of frequencies and fields, acoustic spin pumping induced by both shear and longitudinal polarization modes was observed. Linear acoustic spin waves are excited only by shear thickness extensional modes because longitudinal acoustic waves do not couple with the magnetic subsystem in linear regime.
title Spin Waves and Spin Currents in Magnon-Phonon Composite Resonator Induced by Acoustic Waves of Various Polarizations
topic Mesoscale and Nanoscale Physics
Applied Physics
url https://arxiv.org/abs/2403.06274