We consider magnetic Weyl metals as a platform to achieve current control of magnetization textures with transport currents utilizing their underlying band geometry. We show that the transport current in a Weyl semimetal produces an axial magnetization due to orbital magnetic moments of the Weyl electrons. The associated axial magnetization can generate a torque acting on the localized magnetic moments. For the case of a magnetic vortex in a nanodisk of Weyl materials, this current-induced torque can be used to reverse its circulation and polarity. We discuss the axial magnetization torques in Weyl metals on general symmetry grounds and compare their strength to current-induced torques in more conventional materials.

中文翻译：

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中心对称 Weyl 材料中电流感应轴向磁化的磁涡控制


我们将磁性韦尔金属视为一个平台，利用其底层能带几何形状通过传输电流来实现磁化纹理的电流控制。我们表明，由于外尔电子的轨道磁矩，外尔半金属中的传输电流会产生轴向磁化。相关联的轴向磁化可以产生作用于局部磁矩的扭矩。对于 Weyl 材料纳米盘中的磁涡流的情况，这种电流感应扭矩可用于反转其循环和极性。我们基于一般对称性讨论了韦尔金属中的轴向磁化扭矩，并将其强度与更传统材料中的电流感应扭矩进行了比较。