Tunable room temperature magnetic skyrmions in centrosymmetric kagome magnet Mn4Ga2Sn

The successful realization of skyrmion-based spintronic devices depends on the easy manipulation underlying magnetic interactions in skyrmion-hosting materials. Although mechanism skyrmion formation non-centrosymmetric magnets is comprehensively established, stabilization process different skyrmion-like textures centrosymmetric needs further investigation. Here, we utilize Lorentz transmission electron microscopy study to report finding a tunable lattice up room temperature kagome ferromagnet Mn$_4$Ga$_2$Sn. We demonstrate that controlled switching between topological skyrmions and non-topological type-II bubbles can be realized at optimal anisotropy. find are energetically most stable objects hexagonal magnets, whereas application in-plane field stabilizes as an excited state. present significant step towards understanding materials for their future applications.