Fast domain wall motion in nanostripes with out-of-plane fields
Fast domain wall motion in nanostripes with out-of-plane fields
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DOI：
10.1063/1.2976678
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发表时间：
2008-08-25
影响因子：
4
通讯作者：
Reiff, Sarah C.
中科院分区：
文献类型：
--
作者：
Kunz, Andrew;Reiff, Sarah C.
由于影响纳米线器件的可行性，控制畴壁运动非常重要。其中一个障碍是，当受到大于沃克场的场驱动时，由于涡流在壁上成核，导致区域壁面速度变慢。我们给出了详细的模拟结果，包括涡核的成核和随后的快速弹射，导致快速的畴壁速度。抛射是由于一个面外场使核心力矩反转。该技术可用于产生已知取向的畴壁，与初始状态无关。(C) 2008年美国物理研究所。
Controlling domain wall motion is important due to the impact on the viability of proposed nanowire devices. One hurdle is slow domain wall speed when driven by fields greater than the Walker field due to nucleation of vortices in the wall. We present simulation results detailing the dynamics of these vortices including the nucleation and subsequent fast ejection of the vortex core leading to fast domain wall speeds. The ejection is due to the reversal of the core moments by an out-of-plane field. The technique can be used to produce domain walls of known orientation, independent of the initial state. (C) 2008 American Institute of Physics.