Phase diagram of a two-dimensional system with anomalous liquid properties

Details Phase diagram of a two-dimensional system with anomalous liquid properties Phase diagram of a two-dimensional system with anomalous liquid properties

2012-03-30

arxiv.org/abs/1203.6875v1

Physics

Condensed Matter

Soft Condensed Matter

11 pages, 13 figures

Scientific paper

Using Monte Carlo simulation techniques, we calculate the phase diagram for a square shoulder-square well potential in two dimensions that has been previously shown to exhibit liquid anomalies consistent with a metastable liquid-liquid critical point. We consider the liquid, gas and five crystal phases, and find that all the melting lines are first order, despite a small range of metastability. One melting line exhibits a temperature maximum, as well as a pressure maximum that implies inverse melting over a small range in pressure.

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