Abstract Controllable manipulation of skyrmion motion is important for next-generation spintronics. Here, a gradient of voltage-controlled magnetic anistropy (VCMA) induced skyrmion motion in a Co/Pt nanotrack was reported using micromagnetic simulations. The results show that a magnetic skyrmion, driven by the gradient of VCMA, can move straightly along the nanotrack without deflection due to boundary effects. The velocity and diameter of the magnetic skyrmion increases in proportion to the gradient of VCMA, which are in agreement with the analytical model. Effects of notch on the VCMA gradient-induced skyrmion motion are also investigated. This work provides an effective approach to drive skyrmion motion, which can give guidance for next-generation spintronic devices.

中文翻译：

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由压控磁各向异性梯度驱动的 Skyrmion 运动

摘要 斯格明子运动的可控操纵对于下一代自旋电子学很重要。在这里，使用微磁模拟报告了 Co/Pt 纳米轨道中电压控制磁各向异性 (VCMA) 诱导的斯格明子运动的梯度。结果表明，由 VCMA 梯度驱动的磁性斯格明子可以沿着纳米轨道直线移动，而不会因边界效应而偏转。磁性skyrmion的速度和直径与VCMA的梯度成比例增加，这与解析模型一致。还研究了缺口对 VCMA 梯度引起的斯格明子运动的影响。这项工作提供了一种驱动斯格明子运动的有效方法，可以为下一代自旋电子器件提供指导。