LIFSHITZ-POINT CRITICAL AND TRICRITICAL BEHAVIOR IN ANISOTROPICALLY STRESSED PEROVSKITES

被引：73

作者：

AHARONY, A ^{[1
]}

BRUCE, AD ^{[1
]}

机构：

[1] IBM CORP,ZURICH RES LAB,CH-8803 RUSCHLIKON,SWITZERLAND

来源：

PHYSICAL REVIEW LETTERS | 1979年 / 42卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.42.462

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The antiferrodistortive phase transitions of some perovskite crystals, driven first order by strongly cubic order-parameter fluctuations, are shown to become continuous at finite anisotropic stresses favoring ordering of one order-parameter component. The associated critical and tricritical behavior will be that of one of a spectrum of uniaxial Lifshitz systems, its precise character reflecting the form of the anisotropy in the soft-mode dispersion. Our predictions are in substantial accord with recent experiments on RbCaF3. © 1979 The American Physical Society.

引用

页码：462 / 465

页数：4

共 24 条

[1] CRITICAL BEHAVIOR OF MAGNETS WITH DIPOLAR INTERACTIONS .3. ANTIFERROMAGNETS [J].

AHARONY, A .

PHYSICAL REVIEW B, 1973, 8 (07) :3349-3357

[2] POLYCRITICAL POINTS AND FLOPLIKE DISPLACIVE TRANSITIONS IN PEROVSKITES [J].

AHARONY, A ;

BRUCE, AD .

PHYSICAL REVIEW LETTERS, 1974, 33 (07) :427-430

[3] CRITICAL BEHAVIOR OF ANISOTROPIC CUBIC SYSTEMS [J].

AHARONY, A .

PHYSICAL REVIEW B, 1973, 8 (09) :4270-4273

[4] K-193 PHASE-TRANSITION IN RBCAF3 .2. CRITICAL NEUTRON-SCATTERING [J].

ALMAIRAC, R ;

ROUSSEAU, M ;

GESLAND, JY ;

NOUET, J ;

HENNION, B .

JOURNAL DE PHYSIQUE, 1977, 38 (11) :1429-1434

[5] 1ST-ORDER TRANSITIONS, SYMMETRY, AND EPSILON-EXPANSION [J].

BAK, P ;

KRINSKY, S ;

MUKAMEL, D .

PHYSICAL REVIEW LETTERS, 1976, 36 (01) :52-55

[6] BLUME-EMERY-GRIFFITHS-POTTS MODEL IN 2 DIMENSIONS - PHASE-DIAGRAM AND CRITICAL PROPERTIES FROM A POSITION-SPACE RENORMALIZATION GROUP [J].

BERKER, AN ;

WORTIS, M .

PHYSICAL REVIEW B, 1976, 14 (11) :4946-4963

[7] CRITICAL BEHAVIOR OF ANISOTROPIC SYSTEMS [J].

BRUCE, AD .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1974, 7 (12) :2089-2097

[8] APPLICATION OF KADANOFFS LOWER-BOUND RENORMALIZATION TRANSFORMATION TO BLUME-CAPEL MODEL [J].

BURKHARDT, TW .

PHYSICAL REVIEW B, 1976, 14 (03) :1196-1201

[9] TRICRITICAL BEHAVIOR IN UNIAXIALLY STRESSED RBCAF3 [J].

BUZARE, JY ;

FAYET, JC ;

BERLINGER, W ;

MULLER, KA .

PHYSICAL REVIEW LETTERS, 1979, 42 (07) :465-468

[10]

BUZARE JY, 1977, J PHYS LETT-PARIS, V38, pL445

← 1 2 3 →