Theory of longitudinal ferroelectric smectics
نویسندگان
چکیده
Recently, it was discovered that a-chiral smectic layers can undergo a phase transition into a polar smectic. The new phase is fundamentally different from that of the existing chiral SmC* ferroelectrics. In this paper we examine the underlying mechanism responsible for the new form of ferroelectricity. A Landau theory is presented to discuss the competition between ferroelectricity and other forms of ordering such as anti-ferroelectricity. An effective free
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