Spatiotemporal Hierarchy of Relaxation Events, Dynamical Heterogeneities, and Structural Reorganization in a Supercooled Liquid

被引：145

作者：

Candelier, R. ^{[1
]}

Widmer-Cooper, A. ^{[2
]}

Kummerfeld, J. K. ^{[3
]}

Dauchot, O. ^{[1
]}

Biroli, G. ^{[4
,5
]}

Harrowell, P. ^{[3
]}

Reichman, D. R. ^{[6
]}

机构：

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

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[3] Univ Sydney, Dept Chem, Sydney, NSW 2006, Australia

[4] IPhT, CEA, Inst Phys Theor, F-91191 Gif Sur Yvette, France

[5] CNRS, URA 2306, F-75700 Paris, France

[6] Columbia Univ, New York, NY 10027 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 13期

基金：

美国国家科学基金会; 澳大利亚研究理事会;

关键词：

VISCOUS-LIQUIDS; TRANSITION;

D O I：

10.1103/PhysRevLett.105.135702

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We identify the pattern of microscopic dynamical relaxation for a two-dimensional glass-forming liquid. On short time scales, bursts of irreversible particle motion, called cage jumps, aggregate into clusters. On larger time scales, clusters aggregate both spatially and temporally into avalanches. This propagation of mobility takes place along the soft regions of the systems, which have been identified by computing isoconfigurational Debye-Waller maps. Our results characterize the way in which dynamical heterogeneity evolves in moderately supercooled liquids and reveal that it is astonishingly similar to the one found for dense glassy granular media.

引用

页数：4

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[22]

WIDMERCOOPER A, 2006, THESIS U SYDNEY

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Yamamoto, R ;

Onuki, A .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1997, 66 (09) :2545-2548

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