The goldstone mode of a liquid crystalline thiadiazole derivative | Zendy

Kresse H. | Zendy; Tschierske C. | Zendy; Linström B. | Zendy; Kremer F. | Zendy; Vallerien S. U. | Zendy

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The goldstone mode of a liquid crystalline thiadiazole derivative

Author(s) -

Kresse H.,

Tschierske C.,

Linström B.,

Kremer F.,

Vallerien S. U.

Publication year - 1990

Publication title -

crystal research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.377

H-Index - 64

eISSN - 1521-4079

pISSN - 0232-1300

DOI - 10.1002/crat.2170251222

Subject(s) - goldstone , dielectric , liquid crystal , phase (matter) , materials science , derivative (finance) , mode (computer interface) , range (aeronautics) , conductivity , electrical resistivity and conductivity , condensed matter physics , helix (gastropod) , analytical chemistry (journal) , optics , chemistry , physics , organic chemistry , optoelectronics , composite material , quantum mechanics , ecology , geodesy , snail , computer science , financial economics , economics , biology , geography , operating system

Dielectric measurements in the kHz‐range on (S)‐2‐(4‐n‐octyloxyphenyl)‐5‐[4‐(4‐methyl‐2‐chloropentanoyloxy)‐phenyl]‐1,3,4‐thiadiazole have been carried out in the smectic C* phase. A very intensive Goldstone mode (Δϵ = 3000, ƒ R = 20–80 Hz) was found between 330 and 380 K. The expected unwinding of the helix with different dc bias fields could not be detected due to the increasing conductivity of the sample.

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