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arXiv · 2312.16122

Magnetic vortex control with current-induced axial magnetization in centrosymmetric Weyl materials

J. G. Yang·Yaroslav Tserkovnyak·D. A. Pesin
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Abstract

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.

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J. G. Yang, Yaroslav Tserkovnyak, D. A. Pesin. 2023-12-26. Magnetic vortex control with current-induced axial magnetization in centrosymmetric Weyl materials. https://arxiv.org/abs/2312.16122

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