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

Xiao C Zeng, D. Stroud, P. M. Hui

Research output: Contribution to journalArticle

3 Citations (Scopus)

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.

Original languageEnglish (US)
Number of pages1
JournalPhysica A: Statistical Mechanics and its Applications
Volume157
Issue number1
DOIs
StatePublished - May 1 1989

Fingerprint

Optical Absorption
Insulator
Superconductor
Numerical Study
optical absorption
Absorption
Surface Plasmon
Metals
Composite
insulators
Lattice Model
composite materials
surface plasmon resonance
metals
Energy Gap
RLC circuits
Capacitor
Conductance
Optical Properties
Infrared

ASJC Scopus subject areas

  • Statistics and Probability
  • Condensed Matter Physics

Cite this

@article{5663e56224ed407ba38e0bb4cdbb51ec,
title = "Numerical study of optical absorption in two-dimensional metal-insulator and normal-superconductor composites",
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.",
author = "Zeng, {Xiao C} and D. Stroud and Hui, {P. M.}",
year = "1989",
month = "5",
day = "1",
doi = "10.1016/0378-4371(89)90328-2",
language = "English (US)",
volume = "157",
journal = "Physica A: Statistical Mechanics and its Applications",
issn = "0378-4371",
publisher = "Elsevier",
number = "1",

}

TY - JOUR

T1 - Numerical study of optical absorption in two-dimensional metal-insulator and normal-superconductor composites

AU - Zeng, Xiao 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.

UR - http://www.scopus.com/inward/record.url?scp=45149146747&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=45149146747&partnerID=8YFLogxK

U2 - 10.1016/0378-4371(89)90328-2

DO - 10.1016/0378-4371(89)90328-2

M3 - Article

VL - 157

JO - Physica A: Statistical Mechanics and its Applications

JF - Physica A: Statistical Mechanics and its Applications

SN - 0378-4371

IS - 1

ER -