Abstract
Monte Carlo results are reported for melting of two-dimensional systems of hard disks for various values of . Runs of up to 1 Monte Carlo sweeps give the following equilibrium results: (1) there is a single second-order transition at volume ; (2) the orientational order parameter drops discontinuously to zero at ; (3) at ; (4) there is consistency with in the isotropic phase, where and . An intermediate phase in which the volume can vary by more than about 1% is ruled out.
- Received 10 April 1995
DOI:https://doi.org/10.1103/PhysRevLett.75.3477
©1995 American Physical Society