Parametric pumping of precession modes in ferromagnetic nanodisks

Feng Guo, L. M. Belova, and R. D. McMichael
Phys. Rev. B 89, 104422 – Published 26 March 2014

Abstract

We report on the parametric excitation of magnetic precession modes in nanodisks using a parallel pumping configuration. The excitations are detected using a ferromagnetic resonance force microscopy method, and the parallel-pumped spectra reveal nonlinear characteristics including instability thresholds and multiple, narrow, sawtooth-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.

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  • Received 12 November 2013
  • Revised 11 March 2014

DOI:https://doi.org/10.1103/PhysRevB.89.104422

©2014 American Physical Society

Authors & Affiliations

Feng Guo*

  • Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA and Maryland Nanocenter, University of Maryland, College Park, Maryland 20742, USA

L. M. Belova

  • Department of Materials Science and Engineering, Royal Institute of Technology, 10044 Stockholm, Sweden

R. D. McMichael

  • Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA

  • *feng.guo@nist.gov
  • robert.mcmichael@nist.gov

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Vol. 89, Iss. 10 — 1 March 2014

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