Deterministic reversal of single magnetic vortex circulation by an electric field

• 作者: Ce-Wen Nan Chuanshou Wang Houbing Huang Jian Liu Jing Wang Jingdi Lu Jinxing Zhang Lin Gu Long-Qing Chen Qinghua Zhang Qintong Zhang Ramamoorthy Ramesh Renci Peng Renrong Liang Xiu-Feng Han Yuelin Zhang
• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2020,（15）
• 页码范围: 1260-1267
• 页数: 8页
• 语种: 英文

摘要

The ability to control magnetic vortex is critical for their potential applications in spintronic devices.Traditional methods including magnetic field,spin-polarized current etc.have been used to flip the core and/or reverse circulation of vortex.However,it is challenging for deterministic electric-field control of the single magnetic vortex textures with time-reversal broken symmetry and no planar magnetic anisotropy.Here it is reported that a deterministic reversal of single magnetic vortex circulation can be driven back and forth by a space-varying strain in multiferroic heterostructures,which is controlled by using a bi-axial pulsed electric field.Phase-field simulation reveals the mechanism of the emerging magnetoelastic energy with the space variation and visualizes the reversal pathway of the vortex.This deterministic electric-field control of the single magnetic vortex textures demonstrates a new approach to integrate the low-dimensional spin texture into the magnetoelectric thin film devices with low energy consumption.