Nanoscale Near-Field Steering of Magnetic Vortices
Nanoscale Near-Field Steering of Magnetic Vortices
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DOI：
10.1103/physrevapplied.16.034032
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发表时间：
2021-09
影响因子：
4.6
通讯作者：
Dongxing Yu;Chaowei Sui;D. Schulz;J. Berakdar;C. Jia
中科院分区：
文献类型：
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作者：
Dongxing Yu;Chaowei Sui;D. Schulz;J. Berakdar;C. Jia
磁光方法有望快速、精确地处理磁数据。这项研究提出了一种利用偏置纳米级扫描尖端周围的电近场通过磁电相互作用精确时空控制磁涡流或斯格明子的方案。通过平衡拓扑洛伦兹力与上方偏心尖端产生的吸引力，可以捕获、加速或停止磁性纹理，而不会产生横向霍尔漂移等不良影响。该方法适用于多种非共线磁结构，并指出了近场功能化用于信息存储和处理的潜力。
Magneto-optical approaches are promising for fast, precise handling of magnetic data. This study presents a scheme for precise spatiotemporal control of magnetic vortices or skyrmions via the magnetoelectric interaction, using the electric near fields around a biased nanoscale scanning tip. By balancing the topological Lorentz force with an attractive force due to the off-center tip above, magnetic textures can be trapped, accelerated, or stopped without undesirable effects such as transverse Hall drift. The method is applicable to a wide class of noncollinear magnetic structures, and points to the potential of functionalizing near fields for information storage and processing.