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COMPUTER SIMULATION OF THE PHASE TRANSITIONS IN CLUSTERS

机译:团簇相变的计算机模拟

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摘要

Methods to analyze the peculiarities of configuration transitions in clusters, mostly of the phase transition in clusters with methods of its description, are presented. The analysis of configuration transitions in an atomic system is based on the behavior of the potential energy surface (PES) of this system. The importance of thermal motion of atoms in clusters for configuration transitions is shown. This means that in the analysis of the cluster phase transitions the density functional theory (DFT) may lead to an error, say, to a doubled melting point. Hence in such an analysis the static methods for interaction in clusters, i.e., DFT, must be combined with a dynamic method, say, with the molecular dynamic method for cluster atoms.
机译:提出了分析簇中构型转变的特性的方法,主要是描述簇中相变的方法。原子系统中构型转变的分析基于该系统的势能面(PES)的行为。显示了原子团簇中的热运动对于构型转变的重要性。这意味着在分析团簇相变时,密度泛函理论(DFT)可能会导致误差,例如,导致熔点翻倍。因此,在这种分析中,用于簇中相互作用的静态方法,即DFT,必须与一种动态方法相结合,例如,与用于簇原子的分子动力学方法相结合。

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