物理学报2011，Vol.60Issue(1)：626-631,6.
自旋转移矩效应激发的非线性磁化动力学
Nonlinear magnetization dynamics excited by the spin-transfer torque effect
摘要
Abstract
The macrospin model based on Landau-Lifshitz-Gilbert equation is used to study the current-induced magnetization dynamics in magnetic spin valves. We find that the DC spin-polarized current could either switch the magnetization of free layer or excite the steady-state precessional motion via the so-called spin-transfer torque effect. The AC current could drive the chaotic oscillations. The route to chaotic oscillation depending on the strength of current is demonstrated through a series of period doubling bifurcations.关键词
自旋转移矩效应/微磁模拟/磁性自旋阀/混沌Key words
spin-transfer torque/ micromagnetic simulation/ magnetic spin-valve/ chaos引用本文复制引用
金伟,万振茂,刘要稳..自旋转移矩效应激发的非线性磁化动力学[J].物理学报,2011,60(1):626-631,6.基金项目
国家自然科学基金(批准号:50871075)和教育部新世纪优秀人才基金(批准号:NCET-10-0603)资助的课题. （批准号:50871075）
