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arXiv · 0907.3447

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

Noe G. Almarza·Jose A. Capitan·Jose A. Cuesta·Enrique Lomba
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Abstract

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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Noe G. Almarza, Jose A. Capitan, Jose A. Cuesta, Enrique Lomba. 2009-07-20. Phase diagram of a two-dimensional lattice gas model of a ramp system. https://doi.org/10.1063/1.3223999

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