Skyrmion Hall effect in a nanotube driven by a rotating magnetic field

Skyrmion Hall effect in a nanotube driven by a rotating magnetic field
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由旋转磁场驱动的纳米管中的斯格明子霍尔效应

DOI:
10.1016/j.jmmm.2021.168142
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发表时间:
2021-05
影响因子:
2.7
通讯作者:
Yan Liu
Yan Liu
中科院分区:
材料科学3区
文献类型:
--
作者:
Mingzhu Xin;Yan Liu

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在这种情况下,我们注意到我们的skyrmion霍尔效应的skyrmion纳米管时,它是由一个旋转的磁场驱动。通过微磁学模拟,我们研究了纳米管中Skyrmion在旋转磁场驱动下的运动。我们发现skyrmion除了绕纳米管旋转外,还平行于纳米管轴运动,这是由于skyrmion霍尔效应。Skyrmion核的极性和磁场的旋转方向决定了Skyrmion沿着纳米管轴的运动方向。Skyrmion霍尔效应的强度与纳米管的尺寸、旋转磁场的频率和吉尔伯特阻尼系数有关。阻尼系数是影响Skyrmion Hall角大小的唯一因素。我们还证明了与平面模型相比,纳米管模型对Skyrmion Hall效应有放大效应。
In this context, we pay our attention to the skyrmion Hall effect of a skyrmion in a nanotube when it is driven by a rotating magnetic field. By using micromagnetic simulations, we study the motion of a skyrmion driven by a rotating magnetic field in a nanotube. We find that the skyrmion moves parallel to the nanotube axis besides rotating around the nanotube, which is due to the skyrmion Hall effect. Both the core polarity of skyrmion and the rotation direction of magnetic field determine the orientation of the skyrmion motion along the nanotube axis. The strength of the skyrmion Hall effect is related to the size of the nanotube, the frequency of the rotating magnetic field and the Gilbert damping coefficient. And the damping coefficient is the only factor that affects the size of skyrmion Hall angle. We also demonstrate that nanotube model has an amplification effect on the skyrmion Hall effect compared with the plane model.
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