Phase transition between the cholesteric and twist grain boundary C phases

被引：23
|
作者：
Luk'yanchuk, I
机构：
[1] LD Landau Theoret Phys Inst, Moscow 117940, Russia
[2] Univ Fed Minas Gerais, Dept Fis, BR-30161970 Belo Horizonte, MG, Brazil
来源：
PHYSICAL REVIEW E | 1998年 / 57卷 / 01期
关键词：
D O I：
10.1103/PhysRevE.57.574
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The upper critical temperature T-c2 for the phase transition between the cholesteric phase (N*) and the twist grain boundary C phase with the layer inclination tilted to the pitch axis (TGB(C1)) in thermotropic liquid crystals is determined by the mean field Chen-Lubensky approach. We show that the N*-TGB(C1) phase transition is split in two with the appearance of either the TGB(A) or the TGB(2q) phase in a narrow temperature interval below T-c2 The latter phase is novel in being superposed from two degenerate TGB(C1) phases with different (left and right) layers inclinations to the pitch axis.
引用
收藏
页码：574 / 581
页数：8
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