Interlayer orientational correlations between transverse dipoles and a simple (Sm-A, Sm-C, Sm-C_A) phase diagram

Abstract

The molecular theory is considered on a simple model potential which stabilizes the anticlinic smectic-C_A phase (Sm- C_A) with respect to the synclinic smectic-C phase (Sm-C). Conventional dispersion and steric interactions between mesogenic molecules gellerally do not promote Sm- C_A. It may be stabilized by interlayer orientational correlations between transverse molecular dipoles located in the flexible chains. A simple phase diagram of the perfectly ordered smectic liquid crystal is presented which contains Sm-A, Sm-C and Sm- C_A.