TY - JOUR
T1 - Numerical study of optical absorption in two-dimensional metal-insulator and normal-superconductor composites
AU - Zeng, X. C.
AU - Stroud, D.
AU - Hui, P. M.
PY - 1989/5/1
Y1 - 1989/5/1
N2 - 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.
AB - 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.
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U2 - 10.1016/0378-4371(89)90328-2
DO - 10.1016/0378-4371(89)90328-2
M3 - Article
AN - SCOPUS:45149146747
VL - 157
SP - 370
JO - Physica A: Statistical Mechanics and its Applications
JF - Physica A: Statistical Mechanics and its Applications
SN - 0378-4371
IS - 1
ER -