Parametric spin wave excitation and cascaded processes during switching in thin films

  • Livesey K
  • Kostylev M
  • Stamps R
  • 10


    Mendeley users who have this article in their library.
  • 16


    Citations of this article.


A theory for calculating the threshold precession angles required to parametrically excite spin waves during large-angle switching of in-plane magnetized films is presented. Analytic expressions for the parametric thresholds are found for finite thickness films when due to three- and four-wave decays. Precession at the threshold angle will produce appreciable spin wave amplitudes only after infinite time. We show that much larger angles are required to experimentally observe nonlinearities within a finite time. This may explain apparent discrepancies reported between ultrafast pulsed reversal and longer time scale high-power ferromagnetic resonance experiments. A comparison of our results to published experimental data for metallic Permalloy films is made. Finally, the film thickness dependence of the threshold is examined and a minimum is found corresponding to when a particular "cascaded" spin wave interaction is resonant.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • K. L. Livesey

  • M. P. Kostylev

  • R. L. Stamps

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free