FERRIMAGNETIC PHASES IN THE BLUME-EMERY-GRIFFITHS MODEL - IMPLICATIONS FOR THE ANTIFERROMAGNETIC POTTS-MODEL

被引：34

作者：

ROSENGREN, A ^{[1
]}

LAPINSKAS, S ^{[1
]}

机构：

[1] VILNIUS UNIV,FAC PHYS,VILNIUS 2054,LITHUANIA

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.71.165

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The cluster-variation method is used to study the phase diagram of the Blume-Emery-Griffiths model on a simple cubic lattice. The main attention is paid to the ferrimagnetic phases occurring in a certain range of coupling parameters. A new topology, including three ferrimagnetic phases, is obtained in the vicinity of the line in parameter space where the model reduces to the antiferromagnetic three-state Potts model. The results imply the existence of three phase transitions in the antiferromagnetic Potts model.

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页码：165 / 168

页数：4

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