Freezing Transitions in the fluid of long elongated molecules

Details Freezing Transitions in the fluid of long elongated molecules Freezing Transitions in the fluid of long elongated molecules

2003-08-30

arxiv.org/abs/cond-mat/0309005v1

Physics

Condensed Matter

Statistical Mechanics

Revtex4 format inculding 5 figures

Scientific paper

We have used the density-functional theory to locate the freezing transitions and calculate the values of freezing parameters for a system of long elongated molecules which interact via the Gay-Berne pair potential. The pair correlation functions of isotropic phase which enter in the theory as input informations are found from the Percus-Yevick integral equation theory. At low temperatures the fluid freezes directly into the smectic A phase on increasing the density. The nematic phase is found to stabilize in between the isotropic and smectic A phases only at high temperatures and high densities. These features of the phase diagram are in good agreement with the computer simulation results.

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