Skyrmion transport driven by pure voltage generated strain gradient

doi:10.1088/1674-1056/ac8927

中国物理B ›› 2022, Vol. 31 ›› Issue (11): 117701-117701.doi: 10.1088/1674-1056/ac8927

Skyrmion transport driven by pure voltage generated strain gradient

Shan Qiu(邱珊)^1,2,†, Jia-Hao Liu(刘嘉豪)^1,†, Ya-Bo Chen(陈亚博)¹, Yun-Ping Zhao(赵云平)¹, Bo Wei(危波)¹, and Liang Fang(方粮)^1,‡

1 Institute for Quantum Information&State Key Laboratory of High Performance Computing, College of Computer, National University of Defense Technology, Changsha 410073, China;
2 Hunan University of Humanities Science and Technology, Loudi 417000, China

收稿日期:2022-04-21 修回日期:2022-07-23 接受日期:2022-08-12 出版日期:2022-10-17 发布日期:2022-10-25
通讯作者: Liang Fang E-mail:lfang@nudt.edu.cn
基金资助:
Project supported in part by the National Natural Science Foundation of China (Grant No. 61832007), the Natural Science Foundation of Shanxi Province, China (Grant Nos. 2021JM-221 and 2018JM6075), and the Natural Science Basic Research Plan in Shanxi Province of China (Grant No. 2020JQ-470).

Skyrmion transport driven by pure voltage generated strain gradient

Shan Qiu(邱珊)^1,2,†, Jia-Hao Liu(刘嘉豪)^1,†, Ya-Bo Chen(陈亚博)¹, Yun-Ping Zhao(赵云平)¹, Bo Wei(危波)¹, and Liang Fang(方粮)^1,‡

1 Institute for Quantum Information&State Key Laboratory of High Performance Computing, College of Computer, National University of Defense Technology, Changsha 410073, China;
2 Hunan University of Humanities Science and Technology, Loudi 417000, China

Received:2022-04-21 Revised:2022-07-23 Accepted:2022-08-12 Online:2022-10-17 Published:2022-10-25
Contact: Liang Fang E-mail:lfang@nudt.edu.cn
Supported by:
Project supported in part by the National Natural Science Foundation of China (Grant No. 61832007), the Natural Science Foundation of Shanxi Province, China (Grant Nos. 2021JM-221 and 2018JM6075), and the Natural Science Basic Research Plan in Shanxi Province of China (Grant No. 2020JQ-470).

摘要/Abstract

摘要： The magnetic skyrmion transport driven by pure voltage-induced strain gradient is proposed and studied via micromagnetic simulation. Through combining the skyrmion with multiferroic heterojunction, a voltage-induced uniaxial strain gradient is adjusted to move skyrmions. In the system, a pair of short-circuited trapezoidal top electrodes can generate the symmetric strain. Due to the symmetry of strain, the magnetic skyrmion can be driven with a linear motion in the middle of the nanostrip without deviation. We calculate the strain distribution generated by the trapezoidal top electrodes pair, and further investigate the influence of the strain intensity as well as the strain gradient on the skyrmion velocity. Our findings provide a stable and low-energy regulation method for skyrmion transport.

关键词: skyrmion, strain gradient, multiferroic heterojunction, spintronics

Abstract: The magnetic skyrmion transport driven by pure voltage-induced strain gradient is proposed and studied via micromagnetic simulation. Through combining the skyrmion with multiferroic heterojunction, a voltage-induced uniaxial strain gradient is adjusted to move skyrmions. In the system, a pair of short-circuited trapezoidal top electrodes can generate the symmetric strain. Due to the symmetry of strain, the magnetic skyrmion can be driven with a linear motion in the middle of the nanostrip without deviation. We calculate the strain distribution generated by the trapezoidal top electrodes pair, and further investigate the influence of the strain intensity as well as the strain gradient on the skyrmion velocity. Our findings provide a stable and low-energy regulation method for skyrmion transport.

Key words: skyrmion, strain gradient, multiferroic heterojunction, spintronics

中图分类号: (Strain-induced piezoelectric fields)

77.65.Ly

85.75.-d (Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields) 12.39.Dc (Skyrmions)

Shan Qiu(邱珊), Jia-Hao Liu(刘嘉豪), Ya-Bo Chen(陈亚博), Yun-Ping Zhao(赵云平), Bo Wei(危波), and Liang Fang(方粮). Skyrmion transport driven by pure voltage generated strain gradient[J]. 中国物理B, 2022, 31(11): 117701-117701.

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Skyrmion transport driven by pure voltage generated strain gradient

Skyrmion transport driven by pure voltage generated strain gradient

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