Antiferromagnetic Skyrmions and Bimerons

Abstract

The topological spin textures, such as magnetic skyrmions and bimerons, are currently a hot topic in condensed matter physics. Magnetic skyrmions are swirling spin textures, which can be stabilized in chiral magnets with perpendicular magnetic anisotropy, while magnetic bimerons can be regarded as the counterpart of skyrmions in magnetic systems with in-plane anisotropy. Both magnetic skyrmions and bimerons have attracted a lot of attentions, because they have small size and low depinning current, and can be used as nonvolatile information carries in future spintronic devices. In this chapter, we mainly present and discuss recent original results about the magnetization dynamics of antiferromagnetic skyrmions and bimerons excited by currents and spatially non-uniform magnetic anisotropy. In addition, we also explore possible applications based on antiferromagnetic skyrmions and bimerons, and review some relevant results.