Current-Driven Nonlinear Skyrmion Dynamics in $d$-Wave Altermagnets
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The paper directly analyzes current-driven skyrmion motion, helicity, and Hall-angle dynamics in frustrated d-wave altermagnets.
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Author(s): Yang Liu, Zhejunyu Jin, Jie Liu, and Peng Yan The center of mass and helicity are two dynamic degrees of freedom of skyrmions. In this Letter, we study the current-driven skyrmion motion in frustrated $d$-wave altermagnets. Contrary to conventional wisdom, we find that the skyrmion helicity is not locked with the skyrmion Hall angle, but unidir… [Phys. Rev. Lett. 137, 076702] Published Tue Aug 11, 2026