Surface acoustic wave driven ferromagnetic resonance in nickel thin films: Theory and experiment
By L. Dreher, M. Weiler, M. Pernpeintner, H. Huebl, R. Gross, M. Brandt, S. Goennenwein. 2012
216 citations recorded by the source corpus.
We present an extensive experimental and theoretical study of surface acoustic wave-driven ferromagnetic resonance. In a first modeling approach based on the Landau-Lifshitz-Gilbert equation, we derive expressions for the magnetization dynamics upon magnetoelastic driving that are used to calculate the absorbed microwave power upon magnetic resonance as well as the spin current density generated by the precessing magnetization in the vicinity of a ferromagnet/normal metal interface. In a second modeling approach, we deal with the backaction of the magnetization dynamics on the elastic wave by solving the elastic wave equation and the Landau-Lifshitz-Gilbert equation selfconsistently, obtaining analytical solutions for the acoustic wave phase shift and attenuation. We compare both modeling approaches with the complex forward transmission of a LiNbO$_3$/Ni surface acoustic wave hybrid device recorded experimentally as a function of the external magnetic field orientation and magnitude, rotating the field within three different planes and employing three different surface acoustic wave frequencies. We find quantitative agreement of the experimentally observed power absorption and surface acoustic wave phase shift with our modeling predictions using one set of parameters for all field configurations and frequencies.
Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/8d20c504208b0dd54236342f98acf3560e5aac3f
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In Atomic and Molecular Physics, and Optics
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Spin insulatronics (2020, background): “The ability to trigger collective excitations using magnetoelastic coupling [74] and to interconvert these excitations and elastic waves [75] through interdigitated piezo-electric transducers”