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  • Gapless phason in an antiferroelectric liquid crystal
    Muševič, Igor ...
    The phason dispersion in the antiferroelectric Sm-C_A^* liquid crystalline phase of 4-(1-methylheptyloxycarbonyl)phenyl- 4'-octyloxybibhenil-4-carboxylate has been studied by qusielastic ... light-scattering experiments. The phasob is found to be gapless as predicted for a Goldstone mode recovering the broken continous symmetry. The disopersionhas a minimum at q = 2q_c, where q_c is the wave vector of the unperturbed Sm-C_A^* structure. These results are consistent with the alternating-tilt model of the antiferroelectric Sm-C_A^* phase.
    Source: Physical review letters. - ISSN 0031-9007 (71, 1993, str. 1180-1183)
    Type of material - article, component part
    Publish date - 1993
    Language - english
    COBISS.SI-ID - 373348