Formation and Relaxation Dynamics of Magnetic Skyrmion

Magnetic skyrmions (MS), a group of quasiparticle with topological charge, have attracted extensive research interest because they are promising candidates as information carriers in future spintronic application. MS was first detected by Muhlbauer et al. [1] with neutron scattering in bulk MnSi with a form of long-range magnetic ordered lattice-like structure. Subsequently, systematic real-space observations of skyrmion lattice (SkL) with Lorentz transmission electron microscopy (L-TEM) in B20 magnets of metallic MnSi, Fe1-xCoxSi, FeGe, and insulating Cu2OSeO3 led to significant breakthroughs in this field.[2] Both metastable zero field and thermal dynamically equilibrium magnetic field supported skyrmions has been reported. [2] Despite extensive research in this field in the past decade, the formation and relaxation dynamics of magnetic skyrmions is still elusive. In this study, we focus on using in situ L-TEM to study dynamics of magnetic skyrmions.