Cluster expansion for the spin-3/2 Blume-Capel model

被引：19
|
作者：
Ilkovic, V
机构：
[1] Dept. of Theor. Phys. and Geophysics, Faculty of Natural Sciences, 041 54 Košice
来源：
PHYSICA A | 1996年 / 234卷 / 1-2期
关键词：
D O I：
10.1016/S0378-4371(96)00289-0
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The two-spin cluster approximation in the cluster expansion method is applied for the spin-3/2 Blume-Capel model on the simple cubic lattices. Within this framework the phase diagram and the temperature dependence of the magnetization are obtained. We have found in the ordered phase a first-order line ending at an isolated critical point in the midst of an ordered phase (coexistence of two critical phases). The results are in qualitative agreement with the results of the molecular field approximation.
引用
收藏
页码：545 / 553
页数：9
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