Surface critical behavior of two-dimensional dilute ising models

被引：21
|
作者：
Selke, W [1 ]
Szalma, F
Lajko, P
Igloi, F
机构：
[1] Tech Hsch, Inst Theoret Phys B, D-52056 Aachen, Germany
[2] Univ Szeged, Inst Theoret Phys, H-6720 Szeged, Hungary
[3] Hungarian Acad Sci, Solid State Phys Res Inst, H-1525 Budapest, Hungary
来源：
JOURNAL OF STATISTICAL PHYSICS | 1997年 / 89卷 / 5-6期
关键词：
random Ising model; surface magnetization; Monte Carlo simulations;
D O I：
10.1007/BF02764223
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Ising models with nearest neighbor ferromagnetic random couplings on a square lattice with a (1, 1) surface are studied, using Monte Carlo techniques and a star-triangle transformation method. In particular, the critical exponent of the surface magnetization is found to be close to that of the perfect model, beta(1) = 1/2. The crossover from surface to bulk critical properties is discussed.
引用
收藏
页码：1079 / 1085
页数：7
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