Metastable states as a key to the dynamics of supercooled liquids

被引：122
|
作者：
Büchner, S
Heuer, A
机构：
[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
[2] Univ Munster, Inst Chem Phys, D-48149 Munster, Germany
来源：
PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 10期
关键词：
D O I：
10.1103/PhysRevLett.84.2168
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Computer simulations of a model glass-forming system are presented, which study the correlation between the dynamics in real space and the topography of the potential energy landscape. This analysis clearly reveals that in the supercooled regime the dynamics is strongly influenced by the presence of deep valleys in the energy landscape, corresponding to long-lived metastable amorphous states. We explicitly relate nonexponential relaxation effects and dynamic heterogeneities to these metastable stares and thus to the specific topography of the energy landscape.
引用
收藏
页码：2168 / 2171
页数：4
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