Smectic-A–smectic-Ctransition: Mean-field and critical behaviors
- 14 August 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 63 (7) , 774-777
- https://doi.org/10.1103/physrevlett.63.774
Abstract
Using the Ginzburg criterion, we demonstrate that the width of the critical region associated with the smectic-A–smectic-C transition is dependent on the observable studied. This affords an explanation of the results obtained for terephthal-bis-p-p’-butylaniline, which shows a specific-heat behavior consistent with a Landau-type model, unlike that of the elastic constants. This analysis could apply to other phase transitions.Keywords
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