Stringlike cooperative motion in a supercooled liquid

被引：861

作者：

Donati, C

Douglas, JF

Kob, W

Plimpton, SJ

Poole, PH

Glotzer, SC ^{[1
]}

机构：

[1] NIST, Ctr Theoret & Computat Mat Sci, Gaithersburg, MD 20899 USA

[2] NIST, Div Polymers, Gaithersburg, MD 20899 USA

[3] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[4] Sandia Natl Labs, Parallel Computat Sci Dept, Albuquerque, NM 87185 USA

[5] Univ Western Ontario, Dept Appl Math, London, ON N6A 5B7, Canada

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.80.2338

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Extensive molecular dynamics simulations are performed on a glass-forming Lennard-Jones mixture to determine the nature of the cooperative motions occurring in this model fragile liquid. We observe stringlike cooperative molecular motion ("strings") at temperatures well above the glass transition. The mean length of the strings increases upon cooling, and the string length distribution is found to be nearly exponential.

引用

页码：2338 / 2341

页数：4

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