| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Manipulating Skyrmion Motion on a Nanotrack with Varied Material Parameters and Tilted Spin Currents |
| Jia Luo1, Jia-Hao Guo2, Yun-He Hou2, Jun-Lin Wang3,4, Yong-Bing Xu4, Yan Zhou5*, Philip Wing Tat Pong6*, and Guo-Ping Zhao1,7* |
1College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610068, China
2Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, China
3School of Integrated Circuits, Guangdong University of Technology, Guangzhou 510006, China
4School of Physics, Engineering and Technology, University of York, York, YO10 5DD, United Kingdom
5School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, China
6Department of Electrical and Computer Engineering, New Jersey Institute of Technology, NJ 07102, USA
7Center for Magnetism and Spintronics, Sichuan Normal University, Chengdu 610068, China
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Jia Luo, Jia-Hao Guo, Yun-He Hou et al 2023 Chin. Phys. Lett. 40 097501 |
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Abstract Magnetic skyrmions are topological quasiparticles with nanoscale size and high mobility, which have potential applications in information storage and spintronic devices. The manipulation of skyrmion's dynamics in the track is an important topic due to the skyrmion Hall effect, which can deviate the skyrmions from the preferred direction. We propose a new model based on the ferromagnetic skyrmion, where the skyrmion velocity can be well controlled by adjusting the direction of the current. Using this design, we can avoid the annihilation of the skyrmion induced by the skyrmion Hall effect, which is confirmed by our micromagnetic simulation based on Mumax$^{3}$. In the meantime, we increase the average velocity of the skyrmion by varying the intrinsic material parameters in the track, where the simulations agree well with our analytical results based on the Thiele equation. Finally, we give a phase diagram of the output of the skyrmion in the T-type track, which provides some practical ways for design of logic gates by manipulating crystalline anisotropy through the electrical control.
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Received: 06 July 2023
Published: 10 September 2023
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