Phase transitions in two-dimensional model colloids in a one-dimensional external potential.
Phase transitions in two-dimensional model colloids in a one-dimensional external potential.
复制标题
一维外部电势中二维模型胶体的相变。
DOI：
10.1103/physreve.76.051112
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
P. Nielaba
中科院分区：
文献类型：
--
作者：
F. Bürzle;P. Nielaba
利用Monte Carlo模拟和有限尺寸标度技术研究了模型胶体在一维周期性外势作用下的二维熔化相变。在这里，我们探讨一个硬盘系统的可扩展性比p=sqrt[3]as/（2d）=2，其中as是磁盘之间的平均距离和d的外部电位的周期。三个阶段，调制液体，锁定近晶，锁定浮动固体观察，与其他实验和分析研究。各种统计量，如顺序参数，其累积量和响应函数，用于获得这三个阶段之间的过渡的相图。
Two-dimensional melting transitions for model colloids in the presence of a one-dimensional external periodic potential are investigated using Monte Carlo simulation and finite size scaling techniques. Here we explore a hard disk system with commensurability ratio p=sqrt[3]as/(2d)=2, where as is the mean distance between the disks and d the period of the external potential. Three phases, the modulate liquid, the locked smectic, and the locked floating solid are observed, in agreement with other experimental and analytical studies. Various statistical quantities like order parameters, their cumulants, and response functions, are used to obtain a phase diagram for the transitions between these three phases.