Numerical study of optical absorption in two-dimensional metal-insulator and normal-superconductor composites
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 1063-1067 |
Journal / Publication | Physical Review B |
Volume | 39 |
Issue number | 2 |
Publication status | Published - 1989 |
Externally published | Yes |
Link(s)
Abstract
We analyze a random resistor-inductor-capacitor (RLC) lattice model for the optical properties of a two-dimensional normal-metal insulator composite, using the Y-" 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 RLC network. The real part of the effective conductance is found to show a broad surface plasmon resonance peak below and above the metal percolation threshold, and a Drude peak above the threshold. An effective-medium-approximation (EMA) 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. © 1989 The American Physical Society.
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Citation Format(s)
Numerical study of optical absorption in two-dimensional metal-insulator and normal-superconductor composites. / Zeng, X. C.; Hui, P. M.; Stroud, D.
In: Physical Review B, Vol. 39, No. 2, 1989, p. 1063-1067.
In: Physical Review B, Vol. 39, No. 2, 1989, p. 1063-1067.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review