Phase diagram of the system with the repulsive shoulder potential in two dimensions: Density functional approach

E.S. Chumakov, Y.D. Fomin, E.L. Shangina, E.E. Tareyeva, E.N. Tsiok and V.N. Ryzhov

Physica A: Statistical Mechanics and its Applications, 2015, vol. 432, issue C, 279-286

Abstract: In the framework of the density functional theory of freezing proposed in our previous works, we calculate the phase diagram of two-dimensional system of particles interacting through the repulsive shoulder potential. This potential consists of the hard core and repulsive shoulder of the larger radius. It is shown that at low densities the system melts through the continuous transition in accordance with the Kosterlitz–Thouless–Halperin–Nelson–Young (KTHNY) scenario, while at high densities the conventional first order transition takes place.

Keywords: Low dimensional systems; Kosterlitz–Thouless–Halperin–Nelson–Young (KTHNY) theory; Density functional theory of freezing; Melting transition (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:432:y:2015:i:c:p:279-286

DOI: 10.1016/j.physa.2015.03.051

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