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arXiv · 2310.04810

Manipulation of magnetic topological textures via perpendicular strain and polarization in van der Waals magnetoelectric heterostructure

Zhong Shen·Shuai Dong·Xiaoyan Yao
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Abstract

Multi-functional manipulation of magnetic topological textures such as skyrmions and bimerons in energy-efficient ways is of great importance for spintronic applications, but still being a big challenge. Here, by first-principles calculations and atomistic simulations, the creation and annihilation of skyrmions/bimerons, as key operations for the reading and writing of information in spintronic devices, are achieved in van der Waals magnetoelectric CrISe/In2Se3 heterostructure via perpendicular strain or electric field without external magnetic field. Besides, the bimeron-skyrmion conversion, size modulation and the reversible magnetization switching from in-plane to out-of-plane could also be realized in magnetic-field-free ways. Moreover, the topological charge and morphology can be precisely controlled by a small magnetic field. The strong Dzyaloshinskii-Moriya interaction and tunable magnetic anisotropy energy in a wide window are found to play vital roles in such energy efficient multi-functional manipulation, and the underlying physical mechanisms are elucidated. Our work predicts the CrISe/In2Se3 heterostructure being an ideal platform to address this challenge in spintronic applications, and theoretically guides the low-dissipation multi-functional manipulation of magnetic topological textures.

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Zhong Shen, Shuai Dong, Xiaoyan Yao. 2023-10-07. Manipulation of magnetic topological textures via perpendicular strain and polarization in van der Waals magnetoelectric heterostructure. https://doi.org/10.1103/physrevb.108.l140412

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