DYNAMICAL STRUCTURE FACTOR OF HEISENBERG ANTIFERROMAGNETS WITH FRACTAL STRUCTURES
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The dynamical structure factor S(q, ω) 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, ω) can be characterized by the dynamic exponent za and a new exponent y. We have performed numerical calculations of S(q, ω) in order to confirm its predicted scaling behaviors for d=2 percolating antiferromagnets. The calculated values for the exponents y and za are consistent with our theoretical prediction.
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1993 ◽
Vol 87
(9)
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pp. 745-749
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1977 ◽
Vol 57
(3)
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pp. 699-712
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1990 ◽
Vol 94
(8)
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pp. 857-861
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2006 ◽
Vol 52
(2)
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pp. 233-244
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