Pair correlation functions in nematics, free-energy functional and isotropic-nematic transition

Details Pair correlation functions in nematics, free-energy functional and isotropic-nematic transition Pair correlation functions in nematics, free-energy functional and isotropic-nematic transition

2006-07-06

arxiv.org/abs/cond-mat/0607164v1

Physics

Condensed Matter

Soft Condensed Matter

13 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.97.177801

We develop a free energy functional for an inhomogeneous system that contains both symmetry conserved and symmetry broken parts of the direct pair correlation function. These correlation functions are found by solving the Ornstein- Zernike equation with the Percus-Yevick closure relation. The method developed here gives the pair correlation functions in the ordered phase with features that agree well with the results found by computer simulations. The theory predicts accurately the isotropic-nematic transition in a system of anisotropic molecules and can easily be extended to study other ordered phases such as smectics and crystalline solids.

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