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Deterministic reversal of single magnetic vortex circulation by an electric field

Publication Type

Journal Article

Authors

Zhang, Y., C. W. Wang, H. Huang, J. Lu, R. Liang, J. F. Liu, R. Peng, Q. Zhang, Q. Zhang, J. Wang, L. Gu, X.-F. Han, L.-Q. Chen, Ramamoorthy Ramesh, C.-W. Nan, J. Zhang

DOI

10.1016/j.scib.2020.04.008

Abstract

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. © 2020 Science China Press

Journal

Science Bulletin

Year of Publication

2020

ISSN

20959273

Research Areas

Ramesh Lab