Magnetic vortices induced by a moving tip
Magnetic vortices induced by a moving tip
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DOI：
10.1209/0295-5075/100/27004
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发表时间：
2012-10-01
期刊：
影响因子：
1.8
通讯作者：
Wolf, Dietrich E.
中科院分区：
文献类型：
--
作者：
Magiera, Martin P.;Hucht, Alfred;Wolf, Dietrich E.
通过求解Landau-Lifshitz吉尔伯特方程，数值研究了二维易平面铁磁衬底与垂直于易平面磁化的偶极尖端的相互作用.由于针尖偶极场的对称性，除了共线结构外，磁涡旋结构变得稳定。它对尖端运动引起的激励具有鲁棒性。我们表明，对于高激发的系统可以执行两个状态之间的过渡。畴壁的影响，这也可能导致这种转变，进行检查。版权所有（C）EPLA，2012
A two-dimensional easy-plane ferromagnetic substrate, interacting with a dipolar tip which is magnetised perpendicular with respect to the easy plane is studied numerically by solving the Landau-Lifshitz Gilbert equation. Due to the symmetry of the dipolar field of the tip, in addition to the collinear structure a magnetic vortex structure becomes stable. It is robust against excitations caused by the motion of the tip. We show that for high excitations the system may perform a transition between the two states. The influence of domain walls, which may also induce this transition, is examined. Copyright (C) EPLA, 2012