Plasmon localization and local field distribution in metal-dielectric films
- 15 May 2003
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review E
- Vol. 67 (5), 056611
- https://doi.org/10.1103/physreve.67.056611
Abstract
An exact and very efficient numerical method for calculating the effective conductivity and local-field distributions in random networks is developed. Using this method, the local-field properties of random metal-dielectric films are investigated in a wide spectral range and for a variety of metal concentrations p. It is shown that for metal concentrations close to the percolation threshold and frequencies close to the resonance, the local-field intensity is characterized by a non-Gaussian, exponentially broad distribution. For low and high metal concentrations a scaling region is formed that is due to the increasing number of noninteracting dipoles. The local electric fields are studied in terms of characteristic length parameters. The roles of both localized and extended eigenmodes in Kirchhoff’s Hamiltonian are investigated.
Keywords
This publication has 23 references indexed in Scilit:
- Localization versus Delocalization of Surface Plasmons in Nanosystems: Can One State Have Both Characteristics?Physical Review Letters, 2001
- Electromagnetic field fluctuations and optical nonlinearities in metal-dielectric compositesPhysics Reports, 2000
- Anderson localization of surface plasmons and nonlinear optics of metal-dielectric compositesPhysical Review B, 1999
- Percolation-enhanced nonlinear scattering from metal-dielectric compositesPhysical Review E, 1999
- Experimental Observation of Localized Optical Excitations in Random Metal-Dielectric FilmsPhysical Review Letters, 1999
- Impedance spectroscopy of brushite composites and a scaling approach to the dispersion behavior of inhomogeneous ionic conductorsPhysical Review B, 1998
- Nonlinear optics of random metal-dielectric filmsPhysical Review B, 1998
- Infrared absorption of granular metal films in the percolation rangePhysica A: Statistical Mechanics and its Applications, 1997
- Physical Properties of Macroscopically Inhomogeneous MediaSolid State Physics, 1992
- Highly efficient algorithm for percolative transport studies in two dimensionsPhysical Review B, 1988