Nonautonomous helical motion of magnetization in ferromagnetic nanowire driven by spin-polarized current and magnetic field
Nonautonomous helical motion of magnetization in ferromagnetic nanowire driven by spin-polarized current and magnetic field
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自旋极化电流和磁场驱动的铁磁纳米线磁化强度的非自主螺旋运动
DOI：
10.1140/epjb/e2011-20299-2
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发表时间：
2011-11
影响因子：
1.6
通讯作者：
Zhao, F.
中科院分区：
文献类型：
--
作者：
Li, Z. D.;He, P. B.;Liu, W. M.;Li, Q. Y.;Zhao, F.
We report the nonautonomous domain wall motion in ferromagnetic nanowire driven by spin-polarized current and magnetic field. Our results expatiate the major formation of domain wall velocity which comes from two parts: the longitudinal external field along the easy axis and the coherent domain wall rotation velocity. A critical condition is obtained analytically. Below the critical value, the domain wall rotation stops finally and domain wall velocity is proportional to the longitudinal external field. Above the critical value, the domain wall open out the novel nonautonomous helical motion characterized by the coherent rotation without any distortion. The domain wall velocity can be arbitrarily large for the linear proportion to longitudinal field strength.
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DOI：
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