Reversible Transformation between Isolated Skyrmions and Bimerons

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 currentinduced 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.

Modulation of skyrmionic magnetic textures in two-dimensional vdW materials and their heterostructures

“…and even realized in some experiments 64,77,78 . The other is the internal degrees of freedom-vorticity and helicity, which greatly enrich the morphology of SMT.…”

“…The attempts on this point have been proposed and even realized in some experiments. 64 , 77 , 78 The other is the internal degrees of freedom—vorticity and helicity, which greatly enrich the morphology of SMT. The tunable internal degree of freedom implies the continuous deformation allowed by topological protection, and enables potential functionality by external stimuli with invariant topological property.…”

Experimental Realization of a Skyrmion Circulator

“…This phenomenon, termed the skyrmion Hall effect, − is generally believed to be detrimental for constructing racetrack-like devices, which could annihilate skyrmions. As a result, substantial efforts have been made to resolve the translational motion of skyrmions from the Hall effect. − Here, we show that the intrinsic skyrmion Hall effect could be otherwise implemented for building nonreciprocal skyrmionic devices.…”

d0 Magnetic Skyrmions in Two‐Dimensional Lattice

“…[8] Such topological properties ensure the inherent stability which makes them technologically appealing to be used in future spintronics for information storage and processing. [9][10][11][12][13] Magnetic skyrmions have been observed experimentally in various bulk and thin film systems. [14][15][16][17] Recently, with the discovery of ferromagnetism in Cr 2 Ge 2 Te 6 , [18] CrI 3 [19] and VSe 2 , [20] 2D magnetic crystals are at the frontier of material research, and intensive efforts are devoted to exploit magnetic skyrmions in 2D lattices.…”