On Threshold of Parametric Instability of Spin Waves in a Film with Rough Surface

  • V. B. Cherepanov
Conference paper


The threshold amplitude of microwave pumping field h exp(-iwpt) in a homogeneous unlimited medium is
$$ {h_{th}} = _\Omega ^{\min }({\gamma _\Omega }/|{{\text{V}}_\Omega }|) $$
where Ω is a spatial angle on a resonant surface \( {\omega _{\overrightarrow k }} = {\omega _\rho }/2 \), W\( {\omega _{\overrightarrow k }} \) is the spectrum of spin waves (SW), γΩ is the SW damping, VΩ is the coefficient of coupling of SW and the pumping.

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • V. B. Cherepanov
    • 1
  1. 1.Institute of Automation and ElectrometryNovosibirskUSSR

Personalised recommendations