Quantum fluctuations in the order parameter of quantum skyrmion crystals

Traditionally, skyrmions are treated as continuum magnetic textures of classical spins with a well-defined topological skyrmion number. Owing to their protection, have attracted great interest building blocks in future memory technology. Smaller offer greater density, however, quantum effects not negligible for sizes just few lattice constants. In this paper we study fluctuations around dense crystal ground states, and focus on the utility discretized order parameter skyrmions. The is found be useful indicator existence skyrmions, captures phase transition between two distinct phases.