The hexatic phase of the two-dimensional hard disks system

Details The hexatic phase of the two-dimensional hard disks system The hexatic phase of the two-dimensional hard disks system

2003-05-11

arxiv.org/abs/cond-mat/0305239v3

Phys. Lett. A 330 (2004) 120

Physics

Condensed Matter

Statistical Mechanics

6 pages, 4 figures (minor changes)

Scientific paper

10.1016/j.physleta.2004.07.055

We report Monte Carlo results for the two-dimensional hard disk system in the transition region. Simulations were performed in the NVT ensemble with up to 1024^2 disks. The scaling behaviour of the positional and bond-orientational order parameter as well as the positional correlation length prove the existence of a hexatic phase as predicted by the Kosterlitz-Thouless-Halperin-Nelson-Young theory. The analysis of the pressure shows that this phase is outside a possible first-order transition.

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