单原子二维简单液体的玻璃化
Vitrification of a monatomic 2D simple liquid
摘要：
二维单原子简单液体，其中原子通过Lennard-Jones-Gauss势各向同性地相互作用[M。Engel和H. R. Trebin，Phys. Rev. Lett. 98，225505（2007）]通过在分子动力学模拟中使用快速冷却技术玻璃化。在不同温度下研究了向结晶状态的转化，并确定了时间-温度-转化（TTT）曲线。据发现，到结晶状态的转换时间是最短的温度在低于熔融温度Tm的14%，并在温度低于Tv = 0.6 Tm的转换时间是远远长于可用的CPU时间。这表明对于T < Tv，实现了长寿命的玻璃态。
英文摘要：
A monatomic simple liquid in two dimensions, where atoms interact isotropically through the Lennard-Jones-Gauss potential [M. Engel and H.-R. Trebin, Phys. Rev. Lett. 98, 225505 (2007)], is vitrified by the use of a rapid cooling technique in a molecular dynamics simulation. Transformation to a crystalline state is investigated at various temperatures and the time-temperature-transformation (TTT) curve is determined. It is found that the transformation time to a crystalline state is the shortest at a temerature 14% below the melting temperature Tm and that at temperatures below Tv = 0.6 Tm the transformation time is much longer than the available CPU time. This indicates that a long-lived glassy state is realized for T < Tv.
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