Multicritical behavior of the antiferromagnetic spin-3/2 Blume-Capel model: Finite-size-scaling and Monte Carlo studies

被引：49

作者：

Bekhechi, S ^{[1
]}

Benyoussef, A ^{[1
]}

机构：

[1] FAC SCI RABAT, DEPT PHYS, PHYS THEOR LAB, RABAT, MOROCCO

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.56.13954

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transfer-matrix finite-size-scaling calculations and Monte Carlo simulations are used to investigate the two-dimensional spin-3/2 Ising antiferromagnet in the presence of an external magnetic field and a single-ion potential. Comparison is made between the results of this study and previous mean-field calculations. The phase diagrams and the critical behavior of the model are discussed. In contrast to the mean-field picture, no decomposition of the tricritical point is observed.

引用

页码：13954 / 13959

页数：6

共 38 条

[1] PHASE-TRANSITIONS IN THE SPIN-3/2 BLUME-EMERY-GRIFFITHS MODEL [J].

BAKCHICH, A ;

BASSIR, A ;

BENYOUSSEF, A .

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 1993, 195 (1-2) :188-196

[2] MULTICRITICAL BEHAVIOR OF THE ANTIFERROMAGNETIC SPIN-3/2 BLUME-CAPEL MODEL [J].

BAKCHICH, A ;

BEKHECHI, S ;

BENYOUSSEF, A .

PHYSICA A, 1994, 210 (3-4) :415-423

[3] PHASE-TRANSITIONS IN THE SPIN-3/2 BEG MODEL [J].

BARRETO, FCS ;

BONFIM, OFD .

PHYSICA A, 1991, 172 (03) :378-390

[4] TRANSFER-MATRIX APPROACH TO ESTIMATING COVERAGE DISCONTINUITIES AND MULTICRITICAL-POINT POSITIONS IN TWO-DIMENSIONAL LATTICE-GAS PHASE-DIAGRAMS [J].

BARTELT, NC ;

EINSTEIN, TL ;

ROELOFS, LD .

PHYSICAL REVIEW B, 1986, 34 (03) :1616-1623

[5] FINITE-SIZE SCALING STUDY OF THE TWO-DIMENSIONAL BLUME-CAPEL MODEL [J].

BEALE, PD .

PHYSICAL REVIEW B, 1986, 33 (03) :1717-1720

[6]

BINDER K, 1994, APPLICATIONS MONTE C

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

BLUME, M .

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

[8] 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-&

[9] ON POSSIBILITY OF FIRST-ORDER TRANSITIONS IN ISING SYSTEMS OF TRIPLET IONS WITH ZERO-FIELD SPLITTING .2. [J].

CAPEL, HW .

PHYSICA, 1967, 33 (02) :295-+

[10] CONFORMAL-INVARIANCE AND UNIVERSALITY IN FINITE-SIZE SCALING [J].

CARDY, JL .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1984, 17 (07) :L385-L387

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