Tetratic phase of Hertzian spheres: Monte Carlo simulation.
Tetratic phase of Hertzian spheres: Monte Carlo simulation.
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DOI：
10.1063/1.4822101
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发表时间：
2013-10
期刊：
影响因子：
--
通讯作者：
T. Terao
中科院分区：
文献类型：
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作者：
T. Terao
用多色区域分解蒙特卡罗模拟方法研究了平行壁之间赫兹球双层膜的熔化转变性质。结果表明，在一定的密度和温度下，具有正方晶格对称性的有序双层结构平行于禁闭壁。对该体系的键取向有序参数进行了数值研究，认为该体系经历了一个中间相为四次相的两阶段熔融转变。系统键取向有序存在的磁区的空间分布的快照显示了过渡区域中的丝状结构。
The nature of the melting transition of a bilayer comprising Hertzian spheres, confined between parallel walls, was investigated with the multicolour domain decomposition Monte Carlo simulation. It was confirmed that an ordered bilayer structure with a square lattice symmetry appeared parallel to the walls of confinement at a certain density and temperature. Bond-orientational order parameters of the system were studied numerically, and it has been suggested that this system obeys a two-stage melting transition with an intermediate phase called the tetratic phase. A snapshot of the spatial distribution of domains in which the bond-orientational order of the system exists shows a filamentary structure in the transition regime.