  A mgnetic bimeron is an in-plane topological counterpart of a magnetic
skyrmion. Despite the topological equivalence, their statics and dynamics could
be distinct, making them attractive from the perspectives of both physics and
spintronic applications. In this work, we investigate an antiferromagnetic
(AFM) thin film with interfacial Dzyaloshinskii-Moriya interaction (DMI), and
introduce the AFM bimeron cluster as a new form of topological quasi-particle.
Bimerons demonstrate high current-driven mobility as generic AFM solitons,
while featuring anisotropic and relativistic dynamics excited by currents with
in-plane and out-of-plane polarizations, respectively. Moreover, these spin
textures can absorb other bimeron solitons or clusters along the translational
direction to acquire a wide range of N\'eel topological numbers. The clustering
involves the rearrangement of topological structures, and gives rise to
remarkable changes in static and dynamical properties. The merits of AFM
bimeron clusters reveal a potential path to unify multi-bit data creation,
transmission, storage and even topology-based computation within the same
material system, and may stimulate innovative spintronic devices enabling new
paradigms of data manipulations.
