Smectic-glass transition in a liquid-crystal cell with a "dirty" substrate

被引：8

作者：

Zhang, Quan ^{[1
]}

Radzihovsky, Leo ^{[1
]}

机构：

[1] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

来源：

EPL | 2012年 / 98卷 / 05期

关键词：

ATOMIC-FORCE MICROSCOPY; LATTICES; FIELDS; PHASE;

D O I：

10.1209/0295-5075/98/56007

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We explore the smectic liquid-crystal order in a cell with a "dirty" substrate imposing random pinnings. Within harmonic elasticity we find a subtle three-dimensional surface disorder-driven transition into a pinned smectic glass, controlled by a three-dimensional Cardy-Ostlund-like fixed line, akin to a super-rough phase of a two-dimensional xy model. We compute the associated random substrate-driven distortions of the smectic-glass state, identify the characteristic length scales on the heterogeneous substrate and in the bulk, and discuss a variety of experimental signatures. Copyright (C) EPLA, 2012

引用

页数：5

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