Field-controlled reversible transition between <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>k</mi><mi>π</mi></mrow></math>-skyrmions

Jianxiong Zhang; Wenbin Wang; Lichuang Yan; Jianmin Sun; Hang Li

doi:10.1103/gblx-9ry9

Field-controlled reversible transition between $k π$ -skyrmions

Jianxiong Zhang ^1,*, Wenbin Wang^1,*, Lichuang Yan¹, Jianmin Sun^1,†, and Hang Li ^1,2,‡

¹School of Physics and Electronics, Henan University, Kaifeng 475004, China
²Institute of Quantum Materials and Physics, Henan Academy of Sciences, Zhengzhou 450046, China

^*These authors contributed equally to this work.
^†Contact author: sunjm@vip.henu.edu.cn
^‡Contact author: hang.li@vip.henu.edu.cn

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Phys. Rev. B 112, 054408 – Published 4 August, 2025

DOI: https://doi.org/10.1103/gblx-9ry9

Abstract

A controlled and reversible transition between two topological states is a highly desirable feature in any spintronic system. Combining external magnetic field and hybrid magnetic anisotropy, we show in micromagnetism simulation a controlled transition between different $k π$ -skyrmion states. With an oscillating magnetic field, we further achieve a transition from an initial state to the desired final state. We hence propose a skyrmion-based multibit storage that can be controlled by microwave.

Physical Review B

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Field-controlled reversible transition between kπ-skyrmions

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Field-controlled reversible transition between $k π$ -skyrmions