Local field distribution in random metal-dielectric films; theory and experiment

被引：4

作者：

Genov, DA ^{[1
]}

Seal, K

Nelson, MA

Sarychev, AK

Ying, ZC

Shalaev, VM

机构：

[1] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA

[2] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA

来源：

PHYSICA B-CONDENSED MATTER | 2003年 / 338卷 / 1-4期

关键词：

semicontinuous films; local-field distribution; metal-dielectric film;

D O I：

10.1016/j.physb.2003.08.027

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The local field properties of metal-dielectric films are investigated in terms of the probability distribution function (PDF). For metal coverage p, close to the percolation threshold we obtain a wide, lognormal PDF which for low metal concentrations gradually transforms into a scaling, power-law distribution function. Strong enhancement of the local fields in a broad spectral range is verified by an exact numerical procedure. In experimental studies, metal-dielectric films were synthesized by a pulsed laser deposition technique, and their optical properties were investigated using near-field optical microscopy. The experimentally and numerically obtained probability functions are found to be in good agreement. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：228 / 231

页数：4

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