Influence of geometry on domain wall propagation in a mesoscopic wire
Influence of geometry on domain wall propagation in a mesoscopic wire
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几何形状对介观线中畴壁传播的影响
DOI：
10.1109/20.951067
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发表时间：
2001
影响因子：
2.1
通讯作者：
A. Thiaville
中科院分区：
文献类型：
--
作者：
J. Wunderlich;D. Ravelosona;C. Chappert;F. Cayssol;V. Mathet;J. Ferré;J. Jamet;A. Thiaville
利用非寻常霍尔效应研究了单磁布洛赫畴壁在介观导线中的传播。而直DW自由传播的导线具有恒定的横向宽度，在霍尔交叉的传播表明，DW的形状和DW的速度变化强烈的DW位置的函数。这些结果给出了第一个实验证据，磁性DW的动态特性的图案化结构的强烈影响的设备的几何形状。这一点必须考虑到未来的应用，以自旋电子器件。
The propagation of a single magnetic Bloch domain wall (DW) in a mesoscopic wire is studied by use of the extraordinary Hall effect. Whereas a straight DW propagates freely in a wire with constant lateral width, the propagation in a Hall cross reveals that both DW shape and DW velocity vary strongly as a function of DW position. These results give the first experimental evidence that the dynamical properties of a magnetic DW in a patterned structure are strongly affected by the device geometry. This has to be taken into account for future applications to spin electronic devices.