RANDOM-FIELD BLUME-CAPEL MODEL - MEAN-FIELD THEORY

被引：70

作者：

KAUFMAN, M

KANNER, M

机构：

[1] Department of Physics, Cleveland State University, Cleveland

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.42.2378

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The global phase diagram of the Blume-Capel model in a random field obeying the bimodal symmetric distribution is determined by using the mean-field method. The phase diagram includes an isolated ordered critical end point and two lines of tricritical points. A new phase emerges for strong enough random fields: the ferromagnetic-nonmagnetic phase. It is argued that such a phase occurs in three dimensions. © 1990 The American Physical Society.

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页码：2378 / 2382

页数：5

相关论文

共 15 条

[1] TRICRITICAL POINTS IN SYSTEMS WITH RANDOM FIELDS [J].

AHARONY, A .

PHYSICAL REVIEW B, 1978, 18 (07) :3318-3327

[2] ROUNDING OF 1ST-ORDER PHASE-TRANSITIONS IN SYSTEMS WITH QUENCHED DISORDER [J].

AIZENMAN, M ;

WEHR, J .

PHYSICAL REVIEW LETTERS, 1989, 62 (21) :2503-2506

[3]

[Anonymous], 1984, PHASE TRANSITIONS CR

[4] 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

[5] THEORY OF FIRST-ORDER MAGNETIC PHASE CHANGE IN UO2 [J].

BLUME, M .

PHYSICAL REVIEW, 1966, 141 (02) :517-&

[6] ISING MODEL FOR LAMBDA TRANSITION AND PHASE SEPARATION IN HE-3-HE-4 MIXTURES [J].

BLUME, M ;

EMERGY, VJ ;

GRIFFITHS, RB .

PHYSICAL REVIEW A-GENERAL PHYSICS, 1971, 4 (03) :1071-+

[7] ON POSSIBILITY OF FIRST-ORDER PHASE TRANSITIONS IN ISING SYSTEMS OF TRIPLET IONS WITH ZERO-FIELD SPLITTING [J].

CAPEL, HW .

PHYSICA, 1966, 32 (05) :966-&

[8] PHASE-DIAGRAMS AND HIGHER-ORDER CRITICAL-POINTS [J].

GRIFFITHS, RB .

PHYSICAL REVIEW B, 1975, 12 (01) :345-355

[9] RANDOM-FIELD MECHANISM IN RANDOM-BOND MULTICRITICAL SYSTEMS [J].

HUI, K ;

BERKER, AN .

PHYSICAL REVIEW LETTERS, 1989, 62 (21) :2507-2510

[10] 1ST-ORDER TRANSITIONS IN DEFECT STRUCTURES AT A SECOND-ORDER CRITICAL-POINT FOR THE POTTS-MODEL ON HIERARCHICAL LATTICES [J].

KAUFMAN, M ;

GRIFFITHS, RB .

PHYSICAL REVIEW B, 1982, 26 (09) :5282-5284