Roy, A. ; Madhusudana, N. V. (1997) An ANNNXY model for transversely polarised non-chiral smectic liquid crystals Europhysics Letters, 39 (3). pp. 334-339. ISSN 0295-5075
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Official URL: http://iopscience.iop.org/0295-5075/39/3/335/
Related URL: http://dx.doi.org/10.1209/epl/i1997-00357-4
Abstract
We propose an axial next nearest neighbour xy (ANNNXY) model to describe phase transitions in smectic liquid crystals made of bent non-chiral molecules which exhibit transverse polarisation. The model includes a polar and a quadrupolar NN coupling as well as a competing antiferroelectric NNN coupling between the layers. As the temperature is lowered, the most general sequence of phases predicted by the model is: paraelectric-helielectric (Haf)-antiferroelectric-reentrant Haf-4 layer antiphase-helielectric (Hf)-ferroelectric. We believe that Hf and the antiphase have been seen in very recent experiments.
| Item Type: | Article |
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| Source: | Copyright of this article belongs to EDP Sciences. |
| ID Code: | 20971 |
| Deposited On: | 20 Nov 2010 09:28 |
| Last Modified: | 07 Jun 2011 05:30 |
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