The Onset of Auto-Oscillations of Parametrically Excited Spin-Wave Pairs

Michinobu Mino, Hisayuki Urakami, Vladimir L. Safonov, Keiichi Zouta, Hitoshi Yamazaki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The parallel pumping of spin waves in an yttrium iron garnet (YIG) sphere placed in a microwave cavity has been performed by X-band microwaves. The onset and the principle frequency of auto-oscillations above the threshold of spin-wave instability were studied at various magnatic fields. We found anomalous field dependence of auto-oscillations frequency in the low field side of the butterfly curve, where the threshold of parallel pumping instability exhibits no anomaly magnons becomes importent in a nonequilibrium system.

Original languageEnglish
Pages (from-to)409-412
Number of pages4
Journaljournal of the physical society of japan
Issue number2
Publication statusPublished - Feb 1998


  • Auto-oscillations
  • Nonlinear relaxation
  • Parametric excitation
  • Spin waves
  • YIG

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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