Skyrmion transport driven by pure voltage generated strain gradient  

作　　者：Shan Qiu Jia-Hao Liu Ya-Bo Chen Yun-Ping Zhao Bo Wei Liang Fang 邱珊;刘嘉豪;陈亚博;赵云平;危波;方粮(Institute for Quantum Information&State Key Laboratory of High Performance Computing,College of Computer,National University of Defense Technology,Changsha 410073,China;Hunan University of Humanities Science and Technology,Loudi 417000,China)

机构地区：[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

出　　处：《Chinese Physics B》2022年第11期566-570,共5页中国物理B（英文版）

基　　金：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);the Natural Science Basic Research Plan in Shanxi Province of China(Grant No.2020JQ-470)。

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 

分 类 号：O469[理学—凝聚态物理]