Characterization of Chaotic States of Parallel-Pumped Magnons in Yttrium Iron Garnet

Michinobu Mino, Hitoshi Yamazaki

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Parallel pumping experiments in YIG magnons have been performed at 4.2 K. Above the spin-wave instability threshold, chaotic auto-oscillations are observed. From time-series data, return maps, fractal dimensions, positive Lyapunov exponents, phase space portraits of strange attractors and two-dimensional Poincare sections are obtained. The largest Lyapunov exponent, which describes the degree of chaos, is obtained as 0.34. The Poincare sections of the phase space trajectories exhibit the stretching and holding which are characteristics of strange attractors.

Original languageEnglish
Pages (from-to)4168-4171
Number of pages4
Journaljournal of the physical society of japan
Volume55
Issue number12
DOIs
Publication statusPublished - Dec 1986

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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