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Frequency dependent effective conductivity of two-dimensional metal-dielectric composites

Lotfi Zekri
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Abstract

We analyze a random resistor-inductor-capacitor $(RLC)$ lattice model of 2-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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Lotfi Zekri. 2005-05-26. Frequency dependent effective conductivity of two-dimensional metal-dielectric composites. https://doi.org/10.1142/s0129183105007662

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