NEW PHASES AND MULTIPLE RE-ENTRANCE OF THE BLUME-EMERY-GRIFFITHS MODEL WITH REPULSIVE BIQUADRATIC COUPLING - MONTE-CARLO RENORMALIZATION-GROUP THEORY

被引：55

作者：

NETZ, RR

机构：

来源：

EUROPHYSICS LETTERS | 1992年 / 17卷 / 04期

关键词：

ISING AND OTHER CLASSICAL SPIN MODELS; PHASE TRANSITIONS; GENERAL ASPECTS; ORDER-DISORDER AND STATISTICAL MECHANICS OF MODEL SYSTEMS;

D O I：

10.1209/0295-5075/17/4/016

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We studied the spin-1 Ising model on cubic lattices for repulsive biquadratic coupling using Monte Carlo renormalization-group techniques. Two complete phase diagrams are obtained featuring the ferromagnetic, the antiquadrupolar, and-in a narrow region-the novel ferrimagnetic phase. All three phases exhibit re-entrance upon lowering the temperature; in the case of the ferromagnetic phase, double re-entrance is observed.

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页码：373 / 377

页数：5

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