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Numerical study of optical absorption in two-dimensional metal-insulator and normal-superconductor composites

Author

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  • Zeng, X.C.
  • Stroud, D.
  • Hui, P.M.

Abstract

We analyze a random RLC lattice model for the optical properties of a two-dimensional normal metal-insulator composite, using the Y − Δ transformation algorithm developed by Frank and Lobb. Within such a model, the surface plasmon resonances of a Drude metal-insulator composite are modeled by the ac resonances of a random resistor-inductor-capacitor (RLC) network. The real part of the effective conductance is found to show a broad surface plasmon resonance peak below and above the threshold. An effective-medium (EM) calculation is in excellent agreement with the results of the simulations. We also calculate the far-infrared absorption in a model composite of normal metal and superconductor, using a lattice model. The absorption shows a strong absorption below the superconducting energy gap. An approximate calculation based on the EMA is again in excellent agreement with these results.

Suggested Citation

  • Zeng, X.C. & Stroud, D. & Hui, P.M., 1989. "Numerical study of optical absorption in two-dimensional metal-insulator and normal-superconductor composites," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 157(1), pages 370-370.
    • Handle: RePEc:eee:phsmap:v:157:y:1989:i:1:p:370-370
    DOI: 10.1016/0378-4371(89)90328-2
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    Cited by:

    1. Lafait, J., 1997. "From nano to micro between EMT and N-flux scattering theories," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 241(1), pages 320-327.

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