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Journal article

Experimental Observation of Anomalous Ordering in a Landau-Peierls System

By Als-Nielsen, Jens Aage1; Birgenau, R. J.; Kaplan, M.; Litster, J. D.; Safinya, C. R.

From

Risø National Laboratory for Sustainable Energy, Technical University of Denmark1

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

Language: English
Year: 1977
Pages: 352-355
ISSN: 00319007 and 10797114
Types: Journal article
DOI: 10.1103/PhysRevLett.39.1668

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