MONTE-CARLO RENORMALIZATION-GROUP CALCULATIONS OF CRITICAL EXPONENTS IN SITE-DILUTED 2D-ISING AND 3D-ISING SYSTEMS

被引：14
|
作者：
FAHNLE, M
HOLEY, T
ECKERT, J
机构：
[1] Institut für Physik, Max-Planck-Institut für Metallforschung, 7000 Stuttgart 80
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1992年 / 104卷
关键词：
D O I：
10.1016/0304-8853(92)90762-D
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Monte Carlo renormalization group approach is applied to investigate the critical behavior of the quadratic and the simple-cubic Ising model diluted randomly with nonmagnetic atoms of concentration x. For the 2D model we find at x = 0.1 an increase of the correlation exponent nu (nu = 1.11(1)) compared to the pure-system value of nu = 1.0, whereas eta remains unchanged. For d = 3 a value of nu = 0.688(13) is obtained at x = 0.2, which is well above the result of nu = 0.629(4) for the pure model.
引用
收藏
页码：195 / 196
页数：2
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