Molecular random tilings as glasses

被引：33

作者：

Garrahan, Juan P. ^{[1
]}

Stannard, Andrew ^{[1
]}

Blunt, Matthew O. ^{[1
]}

Beton, Peter H. ^{[1
]}

机构：

[1] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2009年 / 106卷 / 36期

基金：

英国工程与自然科学研究理事会;

关键词：

dimer coverings; dynamic heterogeneity; glass transition; lozenge tilings; SPATIALLY HETEROGENEOUS DYNAMICS; SUPERCOOLED LIQUIDS; TRANSITION; RELAXATION; SIMULATION; SYMMETRY; NETWORK; LATTICE; SYSTEMS; PHASE;

D O I：

10.1073/pnas.0902443106

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We have recently shown that p-terphenyl-3,5,3',5'-tetracarboxylic acid adsorbed on graphite self-assembles into a two-dimensional rhombus random tiling. This tiling is close to ideal, displaying long-range correlations punctuated by sparse localized tiling defects. In this article we explore the analogy between dynamic arrest in this type of random tilings and that of structural glasses. We show that the structural relaxation of these systems is via the propagation-reaction of tiling defects, giving rise to dynamic heterogeneity. We study the scaling properties of the dynamics and discuss connections with kinetically constrained models of glasses.

引用

页码：15209 / 15213

页数：5

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