Acoustically driven ferromagnetic resonance

Mathias Weiler; Lukas Dreher; Christian Heeg; Hans Huebl; Rudolf Gross; Martin S. Brandt; Sebastian T. B. Goennenwein

doi:10.1103/PhysRevLett.106.117601

Acoustically driven ferromagnetic resonance

Materials Science 2015-03-17 v2

Authors: Mathias Weiler , Lukas Dreher , Christian Heeg , Hans Huebl , Rudolf Gross , Martin S. Brandt , Sebastian T. B. Goennenwein

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Abstract

Surface acoustic waves (SAW) in the GHz frequency range are exploited for the all-elastic excitation and detection of ferromagnetic resonance (FMR) in a ferromagnetic/ferroelectric (nickel/lithium niobate) hybrid device. We measure the SAW magneto-transmission at room temperature as a function of frequency, external magnetic field magnitude, and orientation. Our data are well described by a modified Landau-Lifshitz-Gilbert approach, in which a virtual, strain-induced tickle field drives the magnetization precession. This causes a distinct magnetic field orientation dependence of elastically driven FMR that we observe in both model and experiment.

Keywords

magnetic resonance spin waves ultrafast magnetization dynamics

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@article{arxiv.1009.5798,
  title  = {Acoustically driven ferromagnetic resonance},
  author = {Mathias Weiler and Lukas Dreher and Christian Heeg and Hans Huebl and Rudolf Gross and Martin S. Brandt and Sebastian T. B. Goennenwein},
  journal= {arXiv preprint arXiv:1009.5798},
  year   = {2015}
}

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4 pages

Acoustically driven ferromagnetic resonance

Abstract

Keywords

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