Skyrmion dynamics in a chiral magnet driven by periodically varying spin currents
| Autor: | Yin-Yan Zhang, Rui Zhu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Work (thermodynamics) Condensed matter physics Solid-state physics Condensed Matter - Mesoscale and Nanoscale Physics Skyrmion Spin-transfer torque FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Space (mathematics) 01 natural sciences Electronic Optical and Magnetic Materials Magnet 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Torque 010306 general physics 0210 nano-technology Spin-½ |
| DOI: | 10.48550/arxiv.1606.09326 |
| Popis: | 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 $ \beta $-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. |
| Databáze: | OpenAIRE |
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