CRITICAL-BEHAVIOR OF HEAT-CAPACITY AT THE SMECTIC-C-ASTERISK(ALPHA)-SMECTIC-A TRANSITION OF THE ANTIFERROELECTRIC LIQUID-CRYSTAL METHYLHEPTYLOXYCARBONYLPHENYL OCTYLOXYBIPHENYL CARBOXYLATE (MHPOBC)

被引：33

作者：

EMA, K

WATANABE, J

TAKAGI, A

YAO, H

机构：

[1] Department of Physics, Faculty of Science, Tokyo Institute of Technology, Meguro-ku, Tokyo 152

来源：

PHYSICAL REVIEW E | 1995年 / 52卷 / 01期

关键词：

D O I：

10.1103/PhysRevE.52.1216

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：

High resolution ac calorimetric measurements have been carried out near the smectic-C-alpha*-smectic-A phase transition in an antiferroelectric liquid crystal 4-(1-methylheptyloxycarbonyl) phenyl 4'-octyloxybiphenyl-4-carboxylate. A clear deviation from the extended mean-field Landau behavior was seen. The data have been analyzed using a renormalization-group expression, including the correction-to-scaling terms. It was found that the heat-capacity anomaly is described well with the three-dimensional XY model, in agreement with the theoretical prediction. It was also found that the second-order correction terms play quite an important role.

引用

页码：1216 / 1219

页数：4

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