Polyhexatic and Polycrystalline States of Skyrmion Lattices
arXiv:2208.06618 · doi:10.1103/PhysRevB.107.014419
Abstract
Abstract We report Monte Carlo studies of lattices of up to skyrmions treated as particles with negative core energy and repulsive interaction obtained from a microscopic spin model. Temperature dependence of translational and orientational correlations has been investigated for different experimental protocols and initial conditions. Cooling the skyrmion liquid from fully disordered high-temperature state results in the formation of a skyrmion polycrystal. A perfect skyrmion lattice prepared at , on raising temperature undergoes a first-order melting transition into a polyhexatic state that consists of large orientationally ordered domains of fluctuating shape. On the further increasing temperature, these domains decrease in size, leading to a fully disordered liquid of skyrmions.
arXiv comment19 Phys. Rev. pages, 22 figure captions
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