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Current-driven dynamics of skyrmion bubbles in achiral uniaxial magnets |
| Yaodong Wu(吴耀东)1,3, Jialiang Jiang(蒋佳良)3, and Jin Tang(汤进)2,3,† |
1 School of Physics and Materials Engineering, Hefei Normal University, Hefei 230601, China;
2 School of Physics and Optoelectronics Engineering Science, Anhui University, Hefei 230601, China;
3 Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences, Hefei 230031, China |
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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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Received: 18 March 2022
Revised: 24 April 2022
Accepted manuscript online: 07 May 2022
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PACS:
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75.60.Ch
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(Domain walls and domain structure)
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| Fund: This work was supported by the National Natural Science Foundation of China (Grant Nos. 12174396 and 12104123). |
Corresponding Authors:
Jin Tang
E-mail: jintang@ahu.edu.cn
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Cite this article:
Yaodong Wu(吴耀东), Jialiang Jiang(蒋佳良), and Jin Tang(汤进) Current-driven dynamics of skyrmion bubbles in achiral uniaxial magnets 2022 Chin. Phys. B 31 077504
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