Quasi-binary amorphous phase in a 3D system of particles with repulsive-shoulder interactions

Abstract

We report a computer-simulation study of the equilibrium phase diagram of a three-dimensional system of particles with a repulsive step potential. Using free-energy calculations, we have determined the equilibrium phase diagram of this system. At low temperatures, we observe a number of distinct crystal phases. However, under certain conditions the system undergoes a glass transition in a regime where the liquid appears thermodynamically stable. We argue that the appearance of this amorphous low-temperature phase can be understood by viewing this one-component system as a pseudo-binary mixture.

4 pages, 4 figures

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• Particle Monte Carlo simulation of string-like colloidal assembly in 3 dimensions
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• Simulation of Equilibrated States via Molecular Monte Carlo Method of Systems Connected to 3 Reservoirs
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