Study of Nematic-Isotropic Phase-Transition Using P2P4 Model

Monte Carlo study has been performed in the modified planar Lebwohl Lasher model containing P_2 and P_4 Interaction where P_2and P_4 are second and fourth order Legendre polynomial having three-dimensional spin. Weakly First order Nematic to Isotropic phase transition is observed using this model. Extensive Monte Carlo simulations using Wolff algorithm are performed to investigate the average energy, order parameter, ordering susceptibility, entropy and specific heat near phase transition. Transition temperature is also estimated.