Evidence of Growing Spatial Correlations during the Aging of Glassy Glycerol

被引：38

作者：

Brun, C. ^{[1
]}

Ladieu, F. ^{[1
]}

L'Hote, D. ^{[1
]}

Biroli, G. ^{[2
]}

Bouchaud, J-P. ^{[3
]}

机构：

[1] DSM IRAMIS CEA Saclay, CNRS URA 2464, SPEC SPHYNX, F-91191 Gif Sur Yvette, France

[2] CEA, Inst Phys Theor, CNRS URA 2306, F-91191 Gif Sur Yvette, France

[3] Capital Fund Management, F-75007 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 17期

关键词：

RELAXATION; LENGTH;

D O I：

10.1103/PhysRevLett.109.175702

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured, as a function of the age t(a), the aging of the nonlinear dielectric susceptibility chi(3) of glycerol below the glass transition. Whereas the linear susceptibility can be accurately accounted for in terms of an age dependent relaxation time tau(alpha)(t(a)), this scaling breaks down for chi(3), suggesting an increase of the amplitude of chi(3). This is a strong indication that the number N-corr of molecules involved in relaxation events increases with t(a). For T = 0.96 x T-g, we find that N-corr increases by similar to 10% when t(a) varies from 1 to 100 ks. This sheds new light on the relation between length scales and time scales in glasses.

引用

页数：5

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