Disordered spin-one Ising model with biquadratic exchange interaction within functional integration method

被引:0
|
作者
Rudavskii, Y [1 ]
Vatamaniuk, O [1 ]
Savenko, V [1 ]
机构
[1] NATL ACAD SCI UKRAINE,INST CONDENSED MATTER PHYS,UA-290011 LVOV 11,UKRAINE
来源
PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1996年 / 197卷 / 02期
关键词
D O I
10.1002/pssb.2221970222
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
A disordered spin-one Ising model with biquadratic exchange interaction is investigated within a functional integration approach. The free energy is presented in the form of a functional expansion in a series over the Fourier-transformed density fluctuations. In random phase approximation expressions for phase transition temperatures are obtained. The structural disorder is simulated by means of hard core system structure factors.
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页码:479 / 486
页数:8
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