二维非格点模型中的逆熔化
Inverse melting in a two-dimensional off-lattice model
摘要：
我们进行了计算机模拟的一个简单的，二维的非晶格模型，表现出逆熔化。单分散系统包括核心软化磁盘相互作用，通过一个排斥方肩位于一个有吸引力的方井。通过系统地改变势参数，我们增加了压力范围内的液体冻结到晶体等压加热。这种效果在很大程度上取决于肩部的范围。尽管发生在两个维度上，熔融转变是一级的，并且是液体，而不是六方晶或准晶相。我们还提供了一个常用的关联函数用于确定在一个系统中的平移排序的程度上的评论。
英文摘要：
We carry out computer simulations of a simple, two-dimensional off-lattice model that exhibits inverse melting. The monodisperse system comprises core-softened disks interacting through a repulsive square shoulder located inside an attractive square well. By systematically varying the potential parameters, we increase the pressure range over which the liquid freezes to a crystal upon isobaric heating. The effect is largely controlled by the extent of the shoulder. Despite occurring in two dimensions, the melting transition is first order and to a liquid, rather than to a hexatic or quasicrystal phase. We also provide comment on a commonly employed correlation function used to determine the degree of translational ordering in a system.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
