Magnetic skyrmionium diode with a magnetic anisotropy voltage gating
Magnetic skyrmionium diode with a magnetic anisotropy voltage gating
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DOI：
10.1063/5.0025124
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发表时间：
2020-11
影响因子：
4
通讯作者：
Junlin Wang;J. Xia;Xichao Zhang;Xiangyu Zheng;Guanqiao Li;Li Chen;Yan Zhou;Jing Wu;H. Yin;R. Chantrell;Yongbing Xu
中科院分区：
文献类型：
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作者：
Junlin Wang;J. Xia;Xichao Zhang;Xiangyu Zheng;Guanqiao Li;Li Chen;Yan Zhou;Jing Wu;H. Yin;R. Chantrell;Yongbing Xu
磁性Skyrmionium可以看作是两个具有相反拓扑电荷的磁性Skyrmion的联盟，在下一代自旋电子器件中具有潜在的应用。在这里，我们报道了具有电压控制磁各向异性的铁磁纳米轨道中Skyrmionium的电流驱动动力学。研究了由电压门控制的Skrmionum的钉扎和去钉扎。电流驱动的Skyrmionium可以用来模拟具有电压门的纳米轨道中的Skyrmionium二极管效应。我们进一步研究了在没有自旋流的情况下，由磁各向异性梯度驱动的纳米轨道中的Skyrmionum动力学。研究了单个楔形电压门在不同温度下的性能。我们的结果可能为设计电压控制和天基自旋电子器件提供有用的指导。
The magnetic skyrmionium can be seen as a coalition of two magnetic skyrmions with opposite topological charges and has potential applications in next-generation spintronic devices. Here, we report the current-driven dynamics of a skyrmionium in a ferromagnetic nanotrack with the voltage-controlled magnetic anisotropy. The pinning and depinning of a skyrmionium controlled by the voltage gate are investigated. The current-driven skyrmionium can be used to mimic the skyrmionium diode effect in the nanotrack with a voltage gate. We have further studied the skyrmionium dynamics in the nanotrack driven by a magnetic anisotropy gradient in the absence of spin current. The performance of a single wedge-shaped voltage gate at different temperatures is studied. Our results may provide useful guidelines for the design of voltage-controlled and skyrmionium-based spintronic devices.