Energy barrier of magnetization reversal in a magnetic wire with defects
Energy barrier of magnetization reversal in a magnetic wire with defects
复制标题
有缺陷磁线中磁化反转的能垒
DOI：
10.1103/physrevb.78.144411
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发表时间：
2008-10
期刊：
影响因子：
--
通讯作者：
Zhang,S.
中科院分区：
文献类型：
--
作者：
Zhu,Y.;Yu,X.;Zhang,S.
We consider the energy barrier to magnetization reversal in a one-dimensional (1D) magnetic wire with defects. By solving the variable coefficient double Sine-Gordon equation, we obtain the dependence of the energy barrier on the strength and the range of a defect potential. We find that there is a minimum-energy barrier for two defects placed at an optimal distance which is correlated with the width of a $360\ifmmode^\circ\else\textdegree\fi{}$ untwisted domain wall. The possible experimental realization of our results is discussed.
