Real-space observation of current-driven domain wall motion in submicron magnetic wires
Real-space observation of current-driven domain wall motion in submicron magnetic wires
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DOI：
10.1103/physrevlett.92.077205
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发表时间：
2004-02-20
影响因子：
8.6
通讯作者：
Shinjo, T
中科院分区：
文献类型：
--
作者：
Yamaguchi, A;Ono, T;Shinjo, T
我们报告直接观察到电流驱动的磁畴壁（DW）位移使用一个定义明确的单DW在一个微加工的磁性线与亚微米宽度。磁力显微镜可视化，一个单一的DW引入线是由正和负脉冲电流，分别来回位移。直接观察给出了作为脉冲电流的强度和持续时间的函数的DW位移的定量信息。根据自旋转移机制对结果进行了讨论。
We report direct observation of current-driven magnetic domain wall (DW) displacement by using a well-defined single DW in a microfabricated magnetic wire with submicron width. Magnetic force microscopy visualizes that a single DW introduced in a wire is displaced back and forth by positive and negative pulsed current, respectively. The direct observation gives quantitative information on the DW displacement as a function of the intensity and the duration of the pulsed current. The result is discussed in terms of the spin-transfer mechanism.