Reversible Transformation between Isolated Skyrmions and Bimerons

TL;DR

This paper demonstrates a reversible method to transform isolated skyrmions into bimerons using electric current and temperature control, enabling advanced topological spin texture-based information processing.

Contribution

It introduces a reversible transformation technique between skyrmions and bimerons controlled by current and temperature, expanding the potential for topological spin texture applications.

Findings

Reversible transformation between skyrmions and bimerons achieved.

Transformation controlled by current amplitude and scanning direction.

Intermediate states include skyrmion bubbles and labyrinth domains.

Abstract

Skyrmions and bimerons are versatile topological spin textures that can be used as information bits for both classical and quantum computing. The transformation between isolated skyrmions and bimerons is an essential operation for computing architecture based on multiple different topological bits. Here we report the creation of isolated skyrmions and their subsequent transformation to bimerons by harnessing the electric current-induced Oersted field and temperature-induced perpendicular magnetic anisotropy variation. The transformation between skyrmions and bimerons is reversible, which is controlled by the current amplitude and scanning direction. Both skyrmions and bimerons can be created in the same system through the skyrmion-bimeron transformation and magnetization switching. Deformed skyrmion bubbles and chiral labyrinth domains are found as nontrivial intermediate transition states. Our results may provide a unique way for building advanced information-processing devices using different types of topological spin textures in the same system.