Excitation of chaotic spin waves through modulational instability

This Letter reports the first experimental demonstration of chaotic excitations through modulational instability for waves with a repulsive nonlinearity. The experiments were carried out for surface spin waves in a magnetic thin film strip in an active feedback ring configuration. At a low ring gain...

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Published inPhysical review letters Vol. 102; no. 23; p. 237203
Main Authors Wu, Mingzhong, Hagerstrom, Aaron M, Eykholt, Richard, Kondrashov, Alexander, Kalinikos, Boris A
Format Journal Article
LanguageEnglish
Published United States 12.06.2009
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Summary:This Letter reports the first experimental demonstration of chaotic excitations through modulational instability for waves with a repulsive nonlinearity. The experiments were carried out for surface spin waves in a magnetic thin film strip in an active feedback ring configuration. At a low ring gain level, one observes the self-generation of one eigenmode. With an increase in the ring gain, one observes the production of additional modes and the onset and enrichment of chaotic behaviors.
ISSN:0031-9007
DOI:10.1103/physrevlett.102.237203