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Parametric pumping of precession modes in ferromagnetic nanodisks

Published

Author(s)

Feng Guo, Lyubov Belova, Robert McMichael

Abstract

We report parametric excitation of magnetic precession modes in nanodisks using a parallel pumping configuration. The excitations are detected using a ferromagneitc resonance force microscopy method, and the parallel-pumped spectra reveal nonlinear characteristics including instability thresholds and multiple, narrow, saw-tooth-shaped resonances. These characteristics are in accord with analytical theory and micromagnetic modeling results. Modeled mode profiles of the excitations show that higher order standing spin-wave modes with both even and odd symmetries are excited under parallel pumping.
Citation
Physical Review B
Volume
89
Issue
10

Keywords

parametric pumping, parallel pumping, spin waves, ferromagnetic resonance (FMR), micromagnetic modeling, ferromagnetic resonance force microscopy (FMRFM), nanomagnetics

Citation

Guo, F. , Belova, L. and McMichael, R. (2014), Parametric pumping of precession modes in ferromagnetic nanodisks, Physical Review B, [online], https://doi.org/10.1103/PhysRevB.89.104422, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=914534 (Accessed April 21, 2024)
Created March 25, 2014, Updated October 12, 2021