Percolation Model for Slow Dynamics in Glass-Forming Materials

被引：35

作者：

Lois, Gregg ^{[1
]}

Blawzdziewicz, Jerzy ^{[1
]}

O'Hern, Corey S. ^{[1
]}

机构：

[1] Yale Univ, Dept Mech Engn, Dept Phys, New Haven, CT 06520 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 01期

关键词：

INTERMEDIATE SCATTERING FUNCTION; ISING SPIN-GLASSES; DISK PACKINGS; HARD-SPHERE; RELAXATION; TRANSITION; LIQUIDS; SUSCEPTIBILITY; TEMPERATURE; SUSPENSIONS;

D O I：

10.1103/PhysRevLett.102.015702

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We identify a link between the glass transition and percolation of regions of mobility in configuration space. We find that many hallmarks of glassy dynamics, for example, stretched-exponential response functions and a diverging structural relaxation time, are consequences of the critical properties of mean-field percolation. Specific predictions of the percolation model include the range of possible stretching exponents 1/3 <=beta <= 1 and the functional dependence of the structural relaxation time tau(alpha) and exponent beta on temperature, density, and wave number.

引用

页数：4

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