Hexatic Order and Herring-Bone Packing in Liquid Crystals
- 7 June 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 48 (23), 1625-1628
- https://doi.org/10.1103/PhysRevLett.48.1625
Abstract
A model is proposed for coupled bond-orientational and herring-bone packing degrees of freedom in layered liquid crystals. Three distinct phases are possible: isotropic, and bond-orientationally ordered stacked hexatic with and without herring-bone order. The transition between the two ordered phases is first order. The isotropic-hexatic transition can be driven first order by fluctuations and becomes second order at a tricritical point. Available experimental data are consistent with our model.Keywords
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