Skyrmion dynamics in a chiral magnet driven by periodically varying spin currents*

Rui Zhu () and Yin-Yan Zhang
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Rui Zhu: South China University of Technology
Yin-Yan Zhang: South China University of Technology

The European Physical Journal B: Condensed Matter and Complex Systems, 2016, vol. 89, issue 12, 1-6

Abstract: Abstract In this work, we investigated the spin dynamics in a slab of chiral magnets induced by an alternating (ac) spin current. Periodic trajectories of the skyrmion in real space are discovered under the ac current as a result of the Magnus and viscous forces, which originate from the Gilbert damping, the spin transfer torque, and the β-nonadiabatic torque effects. The results are obtained by numerically solving the Landau-Lifshitz-Gilbert equation and can be explained by the Thiele equation characterizing the skyrmion core motion.

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1140/epjb/e2016-70467-9

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