Controlling skyrmion motion in an angelfish-type racetrack memory by an AC magnetic field
Controlling skyrmion motion in an angelfish-type racetrack memory by an AC magnetic field
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DOI：
10.35848/1882-0786/ab9efb
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发表时间：
2020-07
影响因子：
2.3
通讯作者：
Koudai Migita;Keisuke Yamada;Y. Nakatani
中科院分区：
文献类型：
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作者：
Koudai Migita;Keisuke Yamada;Y. Nakatani
本文提出了一种利用纳秒级的交流磁场控制三角形磁各向异性减小区域组成的天使型跑道中飞天子运动的方法。微磁模拟验证了该方法的有效性，结果表明，该粒子的最大速度为11 m s−1。此外，可以利用交流磁场的相位来反转skyrmion的运动方向。本文提出的结果为设计利用skyrmion运动的非易失性存储器和逻辑器件提供了一条有前途的途径。
We propose a method to control the skyrmion motion in an angelfish-type racetrack composed of triangular regions of reduced magnetic anisotropy using an alternating current (AC) magnetic field with nanosecond ordering. The method is verified in micromagnetic simulations from which we found that the maximum velocity of the skyrmion is 11 m s−1. Moreover, the direction the skyrmion moves can be reversed using the phase of the AC magnetic field. The results presented here offer a promising route to designing non-volatile memory and logic devices that utilize skyrmion motion.