SPIN-WAVE CHAOTIC TRANSIENTS

被引：2
|
作者：
DEAGUIAR, FM
REZENDE, SM
DASILVA, FCS
机构：
[1] Departamento de Física, Universidade Federal de Pernambuco
来源：
JOURNAL OF APPLIED PHYSICS | 1994年 / 75卷 / 10期
关键词：
D O I：
10.1063/1.355659
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the observation of transient chaotic spin-wave auto-oscillations in X-band pulsed subsidiary-resonance experiments in a YIG sphere. Chaotic transients to a periodic attractor have been observed near a critical microwave power p(c) approximately 10 dB relative to the Suhl instability threshold. By an averaging of 100 randomly chosen initial conditions at each power, we estimate a critical exponent gamma approximately 0.57. In addition, we demonstrate that the results can be qualitatively understood within the framework of the standard two-mode model. Numerical simulations yield, for a particular set of parameters, chaotic transients obeying the predicted scaling law with a critical exponent gamma approximately 0.54.
引用
收藏
页码：5616 / 5618
页数：3
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