Phase diagram of a two-dimensional lattice gas model of a ramp system

Details Phase diagram of a two-dimensional lattice gas model of a ramp system Phase diagram of a two-dimensional lattice gas model of a ramp system

2009-07-20

arxiv.org/abs/0907.3447v1

Journal of Chemical Physics 131, 124506-12 (2009)

Physics

Condensed Matter

Soft Condensed Matter

14 pages, 8 figures, uses RevTex4

Scientific paper

10.1063/1.3223999

Using Monte Carlo Simulation and fundamental measure theory we study the phase diagram of a two-dimensional lattice gas model with a nearest neighbor hard core exclusion and a next-to-nearest neighbors finite repulsive interaction. The model presents two competing ranges of interaction and, in common with many experimental systems, exhibits a low density solid phase, which melts back to the fluid phase upon compression. The theoretical approach is found to provide a qualitatively correct picture of the phase diagram of our model system.

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