Observation of the soft mode in the Sm-C*α phase

被引：23

作者：

Bourny, V ^{[1
]}

Fajar, A ^{[1
]}

Orihara, H ^{[1
]}

机构：

[1] Nagoya Univ, Sch Engn, Dept Appl Phys, Nagoya, Aichi 4648603, Japan

来源：

PHYSICAL REVIEW E | 2000年 / 62卷 / 05期

关键词：

D O I：

10.1103/PhysRevE.62.R5903

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：

We have performed the electro-optical measurements in an antiferroelectric liquid crystal 4-(1-methylheptyloxycarbonyl)phenyl 4'-octylcarbonyloxybiphenyl-4-carboxylate (MHPOCBC) and observed the soft mode in the chiral Sm-C-alpha(*) phase. This is a direct consequence that the Sm-C-alpha(*) phase is induced by the condensation of a tilting mode. A Landau-type theory was developed to analyze frequency dispersions in the second-order response and it was found that the Sm-A-Sm-C-alpha(*) phase transition is close to a tricritical point.

引用

页码：R5903 / R5906

页数：4

共 12 条

[1]

Blinc R., 1974, SOFT MODES FERROELEC

[2] Phase transitions in the antiferroelectric liquid crystal C8 tolane determined by dielectric and electro-optical measurements [J].

Bourny, V ;

Pavel, J ;

Lorman, V ;

Nguyen, HT .

LIQUID CRYSTALS, 2000, 27 (05) :559-566

[3] Crossover from XY critical to tricritical behavior of heat capacity at the smectic-A-chiral-smectic-C liquid-crystal transition [J].

Ema, K ;

Yao, H .

PHYSICAL REVIEW E, 1998, 57 (06) :6677-6684

[4] Electrooptic measurement in the vicinity of SmA-SmCα* phase transition of an antiferroelectric liquid crystal [J].

Fajar, A ;

Orihara, H ;

Bourny, V ;

Pavel, J ;

Lorman, V .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2000, 39 (2B) :L166-L168

[5]

Hiraoka K., 1993, Ferroelectrics, V147, P13, DOI 10.1080/00150199308217178

[6] SUCCESSIVE PHASE-TRANSITIONS IN ANTIFERROELECTRIC LIQUID-CRYSTAL 4-(1-METHYLHEPTYLOXYCARBONYL)PHENYL 4'-OCTYLCARBONYLOXYBIPHENYL-4-CARBOXYLATE (MHPOCBC) [J].

ISOZAKI, T ;

SUZUKI, Y ;

KAWAMURA, I ;

MORI, K ;

YAMAMOTO, N ;

YAMADA, Y ;

ORIHARA, H ;

ISHIBASHI, Y .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1991, 30 (9A) :L1573-L1575

[7] Structural characterization of various chiral smectic-C phases by resonant X-ray scattering [J].

Mach, P ;

Pindak, R ;

Levelut, AM ;

Barois, P ;

Nguyen, HT ;

Huang, CC ;

Furenlid, L .

PHYSICAL REVIEW LETTERS, 1998, 81 (05) :1015-1018

[8] GAPLESS PHASON IN AN ANTIFERROELECTRIC LIQUID-CRYSTAL [J].

MUSEVIC, I ;

BLINC, R ;

ZEKS, B ;

COPIC, M ;

WITTEBROOD, MM ;

RASING, T ;

ORIHARA, H ;

ISHIBASHI, Y .

PHYSICAL REVIEW LETTERS, 1993, 71 (08) :1180-1183

[9] NONLINEAR DIELECTRIC-SPECTROSCOPY OF THE GOLDSTONE MODE IN AN ANTIFERROELECTRIC LIQUID-CRYSTAL [J].

OBAYASHI, K ;

ORIHARA, H ;

ISHIBASHI, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1995, 64 (09) :3188-3191

[10] ELECTROOPTIC EFFECT AND 3RD-ORDER NONLINEAR DIELECTRIC RESPONSE IN ANTIFERROELECTRIC LIQUID-CRYSTALS [J].

ORIHARA, H ;

ISHIBASHI, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1995, 64 (10) :3775-3786

← 1 2 →