DYNAMICAL STRUCTURE FACTOR OF HEISENBERG ANTIFERROMAGNETS WITH FRACTAL STRUCTURES

被引：0
|
作者：
Terao, Takamichi [1 ]
Yakubo, Kousuke [1 ]
Nakayama, Tsuneyoshi [1 ]
机构：
[1] Hokkaido Univ, Dept Appl Phys, Sapporo, Hokkaido 060, Japan
来源：
FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY | 1993年 / 1卷 / 04期
关键词：
D O I：
10.1142/S0218348X93000964
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
The dynamical structure factor S(q, omega) of Heisenberg antiferromagnets with random fractal structures is investigated in terms of a dynamical scaling argument. It is found that the asymptotic behavior of S(q, omega) can be characterized by the dynamic exponent z(a) and a new exponent y. We have performed numerical calculations of S(q, omega) in order to confirm its predicted scaling behaviors for d = 2 percolating antiferromagnets. The calculated values for the exponents y and z(a) are consistent with our theoretical prediction.
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页码：917 / 921
页数：5
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