Growing spatial correlations of particle displacements in a simulated liquid on cooling toward the glass transition
Growing spatial correlations of particle displacements in a simulated liquid on cooling toward the glass transition
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DOI：
10.1103/physrevlett.82.5064
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发表时间：
1999-06-21
影响因子：
8.6
通讯作者：
Poole, PH
中科院分区：
文献类型：
--
作者：
Donati, C;Glotzer, SC;Poole, PH
我们定义了一个相关函数，量化的液体和非晶材料中的单粒子位移的空间相关性。我们表明，对于平衡液体，这个功能是有关的散装动力学变量的波动。我们评估这个功能，使用计算机模拟的平衡玻璃形成液体，并表明，远程空间相关的位移出现和增长的模式耦合临界温度冷却。
We define a correlation function that quantifies the spatial correlation of single-particle displacements in liquids and amorphous materials. We show that for an equilibrium liquid this function is related to fluctuations in a bulk dynamical variable. We evaluate this function using computer simulations of an equilibrium glass-forming liquid, and show that long range spatial correlations of displacements emerge and grow on cooling toward the mode coupling critical temperature.