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.

引用

页码：917 / 921

页数：5

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