论文标题
在二维中，几周的chandler-anderson系统的两步融化
Two step melting of the Weeks-Chandler-Anderson system in two dimensions
论文作者
论文摘要
我们提出了一项详细的数值模拟研究，该研究通过周几周的颗粒系统通过周数 - 安德森的潜力，这是Lennard-Jones潜力的排斥部分。随着密度的降低，系统显示出两步熔化：从固体到示象相的连续熔化，然后是示象至液体的一阶融化。固体熔化与Kosterlitz-Halperin-Halperin-Nelson-Young（Kthny）场景一致，并显示出脱位未连接。另一方面，示象相对于流体相的一阶熔化是由在示型流体接口处形成缺陷串所主导的。
We present a detailed numerical simulation study of a two dimensional system of particles interacting via the Weeks-Chandler-Anderson potential, the repulsive part of the Lennard-Jones potential. With reduction of density, the system shows a two-step melting: a continuous melting from solid to hexatic phase, followed by a a first order melting of hexatic to liquid. The solid-hexatic melting is consistent with the Kosterlitz-Thouless-Halperin-Nelson-Young (KTHNY) scenario and shows dislocation unbinding. The first order melting of hexatic to fluid phase, on the other hand, is dominated by formation of string of defects at the hexatic-fluid interfaces.
