Tunable room temperature magnetic skyrmions in centrosymmetric kagome magnet Mn4Ga2Sn

Abstract

Skyrmions are vortex-like magnetic textures typically observed in non-centrosymmetric systems, i.e. those with no centre of inversion. Here, using Lorentz transmission electron microscopy supported with micromagnetic simulations the authors report the observation of skyrmion lattices in the centrosymmetric kagome ferromagnet Mn4Ga2Sn, where a controlled switching between the topological skyrmions and non-topological type-II magnetic bubbles can be realized by manipulating the in-plane magnetic field at the optimal magnetic anisotropy.