Hexatic phase and water-like anomalies in a two-dimensional fluid of particles with a weakly softened core.

Abstract

We study a two-dimensional fluid of particles interacting through a spherically symmetric and marginally soft two-body repulsion. This model can exist in three different crystal phases, one of them with square symmetry and the other two triangular. We show that, while the triangular solids first melt into a hexatic fluid, the square solid is directly… (More)
DOI: 10.1063/1.4749260

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