SPECIFIC-HEAT OF THE 2-DIMENSIONAL +/-J-ISING-MODEL

被引：10
作者：
INOUE, M
机构：
[1] Faculty of Science and Engineering, Tokyo Denki University, Hatoyama
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1995年 / 64卷 / 10期
关键词：
+/-J ISING MODEL; RANDOM ISING MODEL; SPECIFIC HEAT; SPIN GLASS; PFAFFIAN METHOD; CRITICAL TEMPERATURE;
D O I：
10.1143/JPSJ.64.3699
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The two-dimensional +J random Ising model is studied numerically up to a system size 700 x 701 by using the Pfaffian method which gives exact free energy and correlation functions. The behavior of the specific heat at the paramagnetic-ferromagnetic phase boundary is analysed by using logarithmic type, double-logarithmic type and cusp type of regression equations. It is found that the logarithmic divergence is the most natural behavior. The critical temperature is determined accurately.
引用
收藏
页码：3699 / 3706
页数：8
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