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arXiv · 2205.03641

Current-driven Dynamics of Skyrmion Bubbles in Achiral Uniaxial Magnets

Yaodong Wu·Jialiang Jiang·Jin Tang
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Abstract

We report dynamics of skyrmion bubbles driven by spin-transfer torque in achiral ferromagnetic nanostripes using micromagnetic simulations. In a three-dimensional uniaxial ferromagnet with a quality factor that is smaller than 1, the skyrmion bubble is forced to stay at the central nanostripe by a repulsive force from the geometry border. The coherent motion of skyrmion bubbles in the nanostripe can be realized by increasing the quality factor to ~3.8. Our results should propel the design for future spintronic devices such as artificial neural computing and racetrack memory based on dipole-stabilized skyrmion bubbles.

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Yaodong Wu, Jialiang Jiang, Jin Tang. 2022-05-07. Current-driven Dynamics of Skyrmion Bubbles in Achiral Uniaxial Magnets. https://doi.org/10.1088/1674-1056/ac6db1

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