Excitation of Chaotic Spin Waves through Modulational Instability

被引：29

作者：

Wu, Mingzhong ^{[1
]}

Hagerstrom, Aaron M. ^{[1
]}

Eykholt, Richard ^{[1
]}

Kondrashov, Alexander ^{[2
]}

Kalinikos, Boris A. ^{[2
]}

机构：

[1] Colorado State Univ, Dept Phys, Ft Collins, CO 80523 USA

[2] St Petersburg Electrotech Univ, St Petersburg 197376, Russia

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 23期

基金：

俄罗斯基础研究基金会; 美国国家科学基金会;

关键词：

LC TRANSMISSION-LINE; LONG-TIME DYNAMICS; IRON-GARNET FILMS; FERROMAGNETIC-FILMS; DEEP-WATER; SOLITONS; GENERATION; ENVELOPE;

D O I：

10.1103/PhysRevLett.102.237203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：4

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