期刊
JOURNAL OF CHEMICAL PHYSICS
卷 140, 期 14, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.4870086
关键词
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资金
- NSERC
- ACEnet
- CFI
- Dr. Bernard W. Gamson Computational Science Center at Yeshiva College
We carry out computer simulations of a simple, two-dimensional off-lattice model that exhibits inverse melting. The monodisperse system comprises core-softened disks interacting through a repulsive square shoulder located inside an attractive square well. By systematically varying the potential parameters, we increase the pressure range over which the liquid freezes to a crystal upon isobaric heating. The effect is largely controlled by the extent of the shoulder. Despite occurring in two dimensions, the melting transition is first order and to a liquid, rather than to a hexatic or quasicrystal phase. We also provide comment on a commonly employed correlation function used to determine the degree of translational ordering in a system. (C) 2014 AIP Publishing LLC.
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