Volume 82, Number 5, June 2008
|Number of page(s)||5|
|Published online||30 May 2008|
Determination of the critical exponents for the isotropic-nematic phase transition in a system of long rods on two-dimensional lattices: Universality of the transition
Departamento de Física, Instituto de Física Aplicada, Universidad Nacional de San Luis-CONICET Chacabuco 917, 5700 San Luis, Argentina
Corresponding author: email@example.com
Accepted: 17 April 2008
Monte Carlo simulations and finite-size scaling analysis have been carried out to study the critical behavior and universality for the isotropic-nematic phase transition in a system of long straight rigid rods of length k (k-mers) on two-dimensional lattices. The nematic phase, characterized by a big domain of parallel k-mers, is separated from the isotropic state by a continuous transition occurring at a finite density. The determination of the critical exponents, along with the behavior of Binder cumulants, indicate that the transition belongs to the 2D Ising universality class for square lattices and to the three-state Potts universality class for triangular lattices.
PACS: 05.50.+q – Lattice theory and statistics (Ising, Potts, etc.) / 64.70.M- – Transitions in liquid crystals / 75.40.Mg – Numerical simulation studies
© EPLA, 2008
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