Journal
INTERNATIONAL JOURNAL OF MODERN PHYSICS C
Volume 16, Issue 6, Pages 991-998Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0129183105007662
Keywords
conductivity; composites; resistor networks; percolation
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We analyze a random resistor-inductor-capacitor (RLC) lattice model of two-dimensional metal-insulator composites. The results are compared with Bruggeman's and Landauer's Effective Medium Approximations where a discrepancy was observed for some frequency zones. Such a discrepancy is mainly caused by the strong conductivity fluctuations. Indeed, a two-branches distribution is observed for low frequencies. We show also by increasing the system size that at p(c) the so-called Drude peak vanishes; it increases for vanishing losses.
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