Chaotic dynamics in spin-vortex pairs

被引：16

作者：

Bondarenko, A. V. ^{[1
,2
]}

Holmgren, E. ^{[1
]}

Li, Z. W. ^{[1
]}

Ivanov, B. A. ^{[2
,3
]}

Korenivski, V. ^{[1
]}

机构：

[1] Royal Inst Technol, S-10691 Stockholm, Sweden

[2] Natl Acad Sci, Inst Magnetism, UA-03142 Kiev, Ukraine

[3] Natl Univ Sci & Technol MISiS, Moscow 119049, Russia

来源：

PHYSICAL REVIEW B | 2019年 / 99卷 / 05期

基金：

瑞典研究理事会;

关键词：

LYAPUNOV EXPONENTS; STATE STABILITY;

D O I：

10.1103/PhysRevB.99.054402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on spin-vortex pair dynamics measured at temperatures low enough to suppress stochastic core motion, thereby uncovering the highly nonlinear intrinsic dynamics of the system. Our analysis shows that the decoupling of the two vortex cores is resonant and can be enhanced by dynamic chaos. We detail the regions of the relevant parameter space, in which the various mechanisms of the resonant core-core dynamics are activated. We show that the presence of chaos can reduce the thermally induced spread in the decoupling time by up to two orders of magnitude.

引用

页数：9

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