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

共 23 条

[1] Approach to jamming in an air-fluidized granular bed [J].

Abate, A. R. ;

Durian, D. J. .

PHYSICAL REVIEW E, 2006, 74 (03)

[2] Democratic particle motion for metabasin transitions in simple glass formers [J].

Appignanesi, GA ;

Fris, JAR ;

Montani, RA ;

Kob, W .

PHYSICAL REVIEW LETTERS, 2006, 96 (05)

[3] Structure and dynamics of glass formers: Predictability at large length scales [J].

Berthier, Ludovic ;

Jack, Robert L. .

PHYSICAL REVIEW E, 2007, 76 (04)

[4] The Nose-Poincare method for constant temperature molecular dynamics [J].

Bond, SD ;

Leimkuhler, BJ ;

Laird, BB .

JOURNAL OF COMPUTATIONAL PHYSICS, 1999, 151 (01) :114-134

[5] THE ORIGIN OF GLASSY DYNAMICS IN THE 2D FACILITATED KINETIC ISING-MODEL [J].

BUTLER, S ;

HARROWELL, P .

JOURNAL OF CHEMICAL PHYSICS, 1991, 95 (06) :4454-4465

[6] Building Blocks of Dynamical Heterogeneities in Dense Granular Media [J].

Candelier, R. ;

Dauchot, O. ;

Biroli, G. .

PHYSICAL REVIEW LETTERS, 2009, 102 (08)

[7]

CANDELIER R, ARXIV09120472

[8] Spatial correlations of mobility and immobility in a glass-forming Lennard-Jones liquid [J].

Donati, C ;

Glotzer, SC ;

Poole, PH ;

Kob, W ;

Plimpton, SJ .

PHYSICAL REVIEW E, 1999, 60 (03) :3107-3119

[9] Geometrical explanation and scaling of dynamical heterogeneities in glass forming systems [J].

Garrahan, JP ;

Chandler, D .

PHYSICAL REVIEW LETTERS, 2002, 89 (03) :357041-357044

[10] Particle dynamics and the development of string-like motion in a simulated monoatomic supercooled liquid [J].

Gebremichael, Y ;

Vogel, M ;

Glotzer, SC .

JOURNAL OF CHEMICAL PHYSICS, 2004, 120 (09) :4415-4427

← 1 2 3 →