Phys. Rev. Lett. 93, 247801 (2004) [4 pages]New Hexatic Liquid Phase Observed in Lyotropic Thin FilmsReceived 18 August 2004; published 6 December 2004 An intermediate surface hexatic phase between the liquid and the crystalline phases has been found for the first time in a lyotropic lamellar liquid-crystal system. This phase is highly unusual in that it has long-range sixfold bond-orientational order but liquidlike nearest-neighbor positional correlations, and could represent a significant departure from our current understanding of defect-mediated melting in two dimensions. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.247801
DOI:
10.1103/PhysRevLett.93.247801
PACS:
61.30.Eb, 64.70.Md
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