Vitrification of a monatomic 2D simple liquid

Abstract

Abstract:A monatomic simple liquid in two dimensions, where atoms interact isotropically through the LennardJones-Gauss potential [M. Engel, 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 T and that at temperatures below T ≡ 0 6T the transformation time is much longer than the available CPU time. This indicates that a long-lived glassy state is realized for T ≤ T .

Glass transition in a two-dimensional core-softened system

“…It makes them much worse glass-formers comparing to the three dimensional (3D) ones [6]. However, some models do demonstrate glass transition even in monatomic 2D system [7][8][9]. Refs.…”

“…Refs. [7][8][9] studies the so-called Lennard-Jones-Gauss system (LJG). This is the system of particles interacting via the pair potential which consists of two parts: Lennard-Jones one and a Gaussian step.…”