%0 Journal Article
%T Nonlinear magnetization dynamics excited by the spin-transfer torque effect<br>自旋转移矩效应激发的非线性磁化动力学
%A Jin Wei
%A Wan Zhen-Mao
%A Liu Yao-Wen
%A <br>金伟
%A 万振茂
%A 刘要稳
%J 物理学报
%D 2011
%I 
%X 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.
%K spin-transfer torque
%K micromagnetic simulation
%K magnetic spin-valve
%K chaos<br>自旋转移矩效应
%K 微磁模拟
%K 磁性自旋阀
%K 混沌
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=1D95042573BF1AF0AFF02424981E2318&yid=9377ED8094509821&vid=BFE7933E5EEA150D&iid=CA4FD0336C81A37A&sid=4B64259D9C96224B&eid=4B64259D9C96224B&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=19