Simulation evidence of critical behavior of isotropic-nematic phase transition in a porous medium

被引：43

作者：

Chakrabarti, J ^{[1
]}

机构：

[1] FOM, Inst Atom & Mol Phys, NL-1098 SJ Amsterdam, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.81.385

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the phase transition from an isotropic to a nematic liquid crystal embedded in a porous network. We model this situation by a simple lattice spin model with a field of finite strength D, but random orientation at a fraction p of randomly selected lattice sites. Monte Carlo simulations show the existence of a nematic phase with quasi-long-range order for a large D. The isotropic --> quasi-long-range nematic transition line has a tricritical point.

引用

页码：385 / 388

页数：4

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