CRITICAL-BEHAVIOR OF SOUND DAMPING IN THE VICINITY OF THE SMECTIC-A-SMECTIC-C TRANSITION IN (8)OVER-BAR-S5

被引：10

作者：

COLLIN, D ^{[1
]}

MOYSES, S ^{[1
]}

NEUBERT, ME ^{[1
]}

MARTINOTY, P ^{[1
]}

机构：

[1] KENT STATE UNIV,INST LIQUID CRYSTAL,KENT,OH 44242

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.73.983

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present ultrasound damping measurements taken in the vicinity of the smectic-A-smectic-C transition of 4-n-pentylphenylthiol-4-n'-octyloxybenzoate (8S5BAR). The results obtained, unlike previous measurements taken on the same compound, reveal marked pretransitional effects above the transition. These effects show that the transition is not of the Landau mean-field type, even though specific-heat, x-ray, and dilatometric measurements suggest this to be the case.

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页码：983 / 986

页数：4

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