Control of magnetic vortex core switching in a Pac-man disk using a single current pulse
Control of magnetic vortex core switching in a Pac-man disk using a single current pulse
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DOI：
10.7567/apex.7.073003
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发表时间：
2014-07
影响因子：
2.3
通讯作者：
Tomonori Sato;Keisuke Yamada;Y. Nakatani
中科院分区：
文献类型：
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作者：
Tomonori Sato;Keisuke Yamada;Y. Nakatani
我们报道了用纳秒电流脉冲开关吃豆人磁盘中的磁漩涡核心，并通过微磁模拟进行了研究。与相同直径和厚度的圆形圆盘相比，最小铁芯开关电流密度降低了75%。成核核的方向是由核核运动引起的面外分量的动能决定的。我们还表明，通过调整电流脉冲的方向，可以唯一地控制磁芯的极性。
We report on the switching of the magnetic vortex core in a Pac-man disk using a nanosecond current pulse, investigated via micromagnetic simulations. The minimum core switching current density is reduced by 75% compared with that of a circular disk with the same diameter and thickness. The direction of the nucleation core is determined by the kinetic field of the out-of-plane component, which is induced by the core motion. We also show that the polarity of the core can be uniquely controlled by adjusting the direction of the current pulse.