Intermittency in ageing

被引：67

作者：

Buisson, L ^{[1
]}

Bellon, L ^{[1
]}

Ciliberto, S ^{[1
]}

机构：

[1] Ecole Normale Super Lyon, Phys Lab, CNRS, UMR 5672, F-69364 Lyon 07, France

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2003年 / 15卷 / 11期

关键词：

D O I：

10.1088/0953-8984/15/11/336

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The fluctuation-dissipation relation is measured on the dielectric properties of a gel (Laponite) and of a polymer glass (polycarbonate). For the gel it is found that during the transition from a fluid-like to a solid-like state the fluctuation-dissipation theorem is strongly violated. The amplitude and the persistence time of this violation are decreasing functions of frequency. Around 1 Hz it may persist for several hours. A very similar behaviour is observed in polycarbonate after a quench below the glass transition temperature. In both cases the origin of this violation is a highly intermittent dynamics characterized by large fluctuations. The relevance of these results for recent models of ageing is discussed.

引用

页码：S1163 / S1179

页数：17

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