Electric-field-driven non-volatile multi-state switching of individual skyrmions in a multiferroic heterostructure
Electric-field-driven non-volatile multi-state switching of individual skyrmions in a multiferroic heterostructure
复制标题
多铁异质结构中单个斯格明子的电场驱动非易失性多态切换
DOI：
10.1038/s41467-020-17354-7
复制
发表时间：
2020-07-17
影响因子：
16.6
通讯作者：
Liu, Junming
中科院分区：
文献类型：
--
作者：
Wang, Yadong;Wang, Lei;Liu, Junming
Electrical manipulation of skyrmions attracts considerable attention for its rich physics and promising applications. To date, such a manipulation is realized mainly via spin-polarized current based on spin-transfer torque or spin-orbital torque effect. However, this scheme is energy consuming and may produce massive Joule heating. To reduce energy dissipation and risk of heightened temperatures of skyrmion-based devices, an effective solution is to use electric field instead of current as stimulus. Here, we realize an electric-field manipulation of skyrmions in a nanostructured ferromagnetic/ferroelectrical heterostructure at room temperature via an inverse magneto-mechanical effect. Intriguingly, such a manipulation is non-volatile and exhibits a multistate feature. Numerical simulations indicate that the electric-field manipulation of skyrmions originates from strain-mediated modification of effective magnetic anisotropy and Dzyaloshinskii-Moriya interaction. Our results open a direction for constructing low-energy-dissipation, non-volatile, and multistate skyrmion-based spintronic devices.
