Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki
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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2014, Volume 100, Issue 2, Pages 118–121
DOI: https://doi.org/10.7868/S0370274X14140082 (Mi jetpl3785) 		 
This article is cited in 41 scientific papers (total in 41 papers)

CONDENSED MATTER

Landau theory for helical nematic phases

E. I. Katsab, V. V. Lebedevab

a Moscow Institute of Physics and Technology
b Landau Institute for Theoretical Physics, Russian Academy of Sciences
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DOI: https://doi.org/10.7868/S0370274X14140082
Abstract: We propose Landau phenomenology for the phase transition from the conventional nematic into the conical helical orientationally non-uniform structure recently identified in liquid crystals formed by “banana”-shaped molecules. The mean field predictions are mostly in agreement with experimental data. Based on the analogy with de Gennes model, we argue that fluctuations of the order parameter turn the transition to the first order phase transition rather than continuous one predicted by the mean-field theory. This conclusion is in agreement with experimental observations. We discuss the new Goldstone mode to be observed in the low-temperature phase.
Received: 18.06.2014
English version:
Journal of Experimental and Theoretical Physics Letters, 2014, Volume 100, Issue 2, Pages 110–113
DOI: https://doi.org/10.1134/S0021364014140070
Bibliographic databases:
Document Type: Article
Language: English
Citation: E. I. Kats, V. V. Lebedev, “Landau theory for helical nematic phases”, Pis'ma v Zh. Èksper. Teoret. Fiz., 100:2 (2014), 118–121; JETP Letters, 100:2 (2014), 110–113
Citation in format AMSBIB
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    • This publication is cited in the following 41 articles:
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