  The rich and fascinating physics of topological spin textures in van der
Waals two-dimensional magnets has motivated recent growing interests, though a
comprehensive understanding remains elusive. Here, in atomistic simulations on
monolayer CrSBr, we find two magnetic phases emerging under non-equilibrium
conditions at distinct temperatures, a standard ferromagnetic transition Tc and
a lower temperature T*. Moreover, the real-space analysis of the spin texture
reveals the emergence of metastable topological bimeron defects below T*,
showing an algebraic-like decaying spin-spin correlation function. The
Dzyaloshinskii-Moriya interaction, induced by the local site asymmetry in the
centrosymmetric CrSBr monolayer, is proved to be the origin of the bimerons
formation. Furthermore, the increasing bimerons density upon increasing the
cooling rate follows a Kibble-Zurek behavior, suggesting a handle to drive and
control topological bimerons below T*. Our results put forward CrSBr as an
important candidate for the investigation of the dynamical behavior of bimerons
in vdW magnets.
