MULTICRITICAL PHASE-DIAGRAMS OF THE BLUME-EMERY-GRIFFITHS MODEL WITH REPULSIVE BIQUADRATIC COUPLING

被引：233

作者：

HOSTON, W

BERKER, AN

机构：

[1] Department of Physics, Massachusetts Institute of Technology, Cambridge

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.67.1027

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Six new phase diagrams, including a novel multicritical topology and two new ordered phases, high-entropy ferrimagnetic and antiquadrupolar, are found in the spin-1 Ising model with only nearest-neighbor interactions, for negative biquadratic couplings. Thus, the global phase diagram of this simple spin system includes nine distinct topologies and three ordered phases. It is indicated that these results, obtained by mean-field theory, are applicable to three-dimensional systems.

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页码：1027 / 1030

页数：4

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