Tuning of chaotic surface spin waves in a magnetic-film feedback ring via the ring gain
Tuning of chaotic surface spin waves in a magnetic-film feedback ring via the ring gain
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通过环增益调节磁膜反馈环中的混沌表面自旋波
DOI：
10.1103/physrevb.83.104402
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发表时间：
2011
影响因子：
3.7
通讯作者：
B. Kalinikos
中科院分区：
文献类型：
--
作者：
A. Hagerstrom;Mingzhong Wu;R. Eykholt;B. Kalinikos
本文报道了磁膜主动反馈环中混沌表面自旋波的受控调谐实验数据。这些波的混沌行为是通过三波非线性相互作用产生的。随着环增益的变化，观察到了两个混沌区域。一种对应于环中只有一个环本征模被激发的情况，另一种对应于两个环本征模被激发的情况。混沌波在每个区域的关联维度和自相关函数(ACF)特性强烈地依赖于环增益的水平，并且这种增益依赖关系在不同区域是不同的。这两个政权之间的转变并不是一个平稳的过渡。特别是，人们观察到ACF副峰到主峰的关联维度和距离都发生了急剧变化。
This paper reports on experimental data on the controlled tuning of chaotic surface spin waves in a magnetic-film active feedback ring. The chaotic behavior of these waves arises through three-wave nonlinear interactions. With a change in the ring gain, two chaotic regimes were observed. One corresponds to the situation where only one ring eigenmode was excited in the ring, while the other corresponds to the situation where two ring eigenmodes were excited. The correlation dimension and autocorrelation function (ACF) properties of the chaotic wave in each regime strongly depend on the level of the ring gain, and this gain dependence differs from one regime to the other. The shift between the two regimes was not a smooth transition. In particular, one observed a sharp change in both the correlation dimension and the distance of the side ACF peaks to the main ACF peak.