期刊
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS
卷 33, 期 6, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218127423500724
关键词
Magnetization dynamic; numerical simulation; dipolar interaction; chaos state
The study investigates the stochastic nature of magnetization dynamics of dipole-dipole interactions described by the Landau-Lifshitz-Gilbert equation without considering the Gilbert damping parameter. It is found that the occurrence of complex dynamic states depends on the spatial anisotropy of interactions and the lattice geometry. The higher-order moments of the magnetization fluctuations reveal two significant dynamical regimes, regular and chaos, depending on the perturbation strength. The correlation and persistence of the magnetization fluctuations are analyzed using the Hurst exponent obtained by the standard deviation principle, showing a transition from an anti-correlated to a positively correlated system as the relevant parameters vary.
The stochastic nature of magnetization dynamics of dipole-dipole interactions described by the Landau-Lifshitz-Gilbert equation without considering the Gilbert damping parameter is investigated. It is shown that the occurrence of the complex dynamic states depends on the spatial anisotropy of interactions on one hand and the lattice geometry on the other. It is observed from the higher-order moments of the magnetization fluctuations that two significant dynamical regimes, regular and chaos, may be obtained depending on the perturbation strength. Relying on the Hurst exponent obtained by the standard deviation principle, the correlation and persistence of the magnetization fluctuations are analyzed. The results also exhibit a transition from an anti-correlated to a positively correlated system as the relevant parameters of the system vary.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据