| Literature DB >> 33436572 |
You Ba1,2, Shihao Zhuang3, Yike Zhang1,2, Yutong Wang1,2, Yang Gao4, Hengan Zhou1,2, Mingfeng Chen5, Weideng Sun1,2, Quan Liu1,2, Guozhi Chai4, Jing Ma5, Ying Zhang6, Huanfang Tian6, Haifeng Du7, Wanjun Jiang1,2, Cewen Nan5, Jia-Mian Hu8, Yonggang Zhao9,10.
Abstract
Room-temperature skyrmions in magnetic multilayers are considered to be promising candidates for the next-generation spintronic devices. Several approaches have been developed to control skyrmions, but they either cause significant heat dissipation or require ultrahigh electric fields near the breakdown threshold. Here, we demonstrate electric-field control of skyrmions through strain-mediated magnetoelectric coupling in ferromagnetic/ferroelectric multiferroic heterostructures. We show the process of non-volatile creation of multiple skyrmions, reversible deformation and annihilation of a single skyrmion by performing magnetic force microscopy with in situ electric fields. Strain-induced changes in perpendicular magnetic anisotropy and interfacial Dzyaloshinskii-Moriya interaction strength are characterized experimentally. These experimental results, together with micromagnetic simulations, demonstrate that strain-mediated magnetoelectric coupling (via strain-induced changes in both the perpendicular magnetic anisotropy and interfacial Dzyaloshinskii-Moriya interaction is responsible for the observed electric-field control of skyrmions. Our work provides a platform to investigate electric-field control of skyrmions in multiferroic heterostructures and paves the way towards more energy-efficient skyrmion-based spintronics.Entities:
Year: 2021 PMID： 33436572 DOI： 10.1038/s41467-020-20528-y
Source DB: PubMed Journal: Nat Commun ISSN： 2041-1723 Impact factor: 14.919