Experimental Observation of Anomalous Ordering in a Landau-Peierls System

Jens Aage Als-Nielsen, R. J. Birgenau, M. Kaplan, J. D. Litster, C. R. Safinya

    Research output: Contribution to journalJournal articleResearchpeer-review


    The smectic-A phase of a liquid crystal is characterized by a one-dimensional mass density wave in a three-dimensional liquid. High-resolution x ray measurements in the smectic-A phase of octyloxycyanobenzylidene (8OCB) show that the order-parameter scattering does not exhibit normal Bragg line profiles but rather corresponds to a power-law singularity of the form (q∥-q0)-2, with q∥ being the longitudinal wave-vector component. Also, the transverse line profile is anomalous. © 1977 The American Physical Society
    Original languageEnglish
    JournalPhysical Review Letters
    Issue number26
    Pages (from-to)352-355
    Publication statusPublished - 1977


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