论文标题
Skyrmion Lattices的多面性和多晶状态
Polyhexatic and Polycrystalline States of Skyrmion Lattices
论文作者
论文摘要
摘要我们报告了蒙特卡洛的研究，该研究最高$ 10^{5} $ skyrmions被视为具有负核能量和从微观自旋模型获得的负相互作用的颗粒。针对不同的实验方案和初始条件，已经研究了翻译和定向相关性的温度依赖性。从完全无序的高温状态中冷却天际液体会导致天际多晶的形成。在$ t = 0 $上制备的完美的天际晶格，在升高温度下，将一阶融化过渡到多面有状态，该状态由波动形状的大型定向有序域组成。在进一步升高的温度下，这些结构域的大小减小，导致天空的完全无序的液体。
Abstract We report Monte Carlo studies of lattices of up to $10^{5}$ 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 $T=0$, 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.
