Transient chaos in single crystal ferromagnetic membranes magneto-elastically driven by high-Q acoustic cavity modes

V. S. Vlasov; A. V. Golov; D. A. Pleshev; L. N. Kotov; V. V. Temnov

doi:10.1063/5.0256528

Transient chaos in single crystal ferromagnetic membranes magneto-elastically driven by high-Q acoustic cavity modes

V V. S. Vlasov (LSI, Ecole Polytechnique, CEA/DRF/IRAMIS, CNRS, Institut Polytechnique de Paris , Palaiseau F-91128,) A A. V. Golov (LSI, Ecole Polytechnique, CEA/DRF/IRAMIS, CNRS, Institut Polytechnique de Paris , Palaiseau F-91128,) D D. A. Pleshev (LSI, Ecole Polytechnique, CEA/DRF/IRAMIS, CNRS, Institut Polytechnique de Paris , Palaiseau F-91128,) L L. N. Kotov (LSI, Ecole Polytechnique, CEA/DRF/IRAMIS, CNRS, Institut Polytechnique de Paris , Palaiseau F-91128,) V V. V. Temnov (LSI, Ecole Polytechnique, CEA/DRF/IRAMIS, CNRS, Institut Polytechnique de Paris , Palaiseau F-91128,)

Abstract

Driving the nonlinear magnetization dynamics in freestanding (100) iron membranes in a perpendicular magnetic field by the lowest-order high-Q acoustic cavity mode at ∼10 GHz frequency is simulated by numerically solving the Landau–Lifshitz–Gilbert equations. The analysis of the large-amplitude magnetization precession within nanosecond time window displays the transient chaotic magnetization dynamics induced by hopping between metastable energy minima on a complex anisotropy landscape. Fingerprints of transient chaos should be observable in femtosecond magneto-acoustic experiments with finite acoustic lifetimes.

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Article Details

Journal Journal of Applied Physics

Volume / Issue Vol. 137, Issue 13

Published April 07, 2025

DOI 10.1063/5.0256528

ISSN 0021-8979

Publisher American Institute of Physics

Journal Info

Journal of Applied Physics

American Institute of Physics

ISSN: 0021-8979 Physical Sciences