Localization-delocalization transition in metal-dielectric films

Dentcho A. Genov; Andrey K. Sarychev; Vladimir M Shalaev

doi:10.1117/12.555735

19 October 2004 Localization-delocalization transition in metal-dielectric films

Dentcho A. Genov, Andrey K. Sarychev, Vladimir M Shalaev

Proceedings Volume 5512, Plasmonics: Metallic Nanostructures and Their Optical Properties II; (2004) https://doi.org/10.1117/12.555735
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

Anderson localization in random potential fields has been studied extensively for the last fifty years. It is commonly accepted that in 1D and 2D systems characterized by non-correlated random potential distributions, all states are exponentially localized. In this paper we investigate the eigen-problem for Surface Plasmons (SP) in random metal-dielectric films. We show that short-range correlations presented in the governing Kirchhoff's Hamiltonian (KH) result in delocalization of the eigenstates at the band center. The delocalization is shown to be manifested through power law singularities for the density of states and SP localization lengths. The study of the system size dependence of the nearest neighbor's level spacing distributions shows a gradual shift of the SP eigen-problem from a metallic phase for small system sizes into an insulating quantum phase for infinite systems. It reveals a genuine metal-insulator transition that takes place in the composite and is characterized by quantum percolation threshold P_q which is higher than the corresponding geometrical critical concentration P_c.

Citation Download Citation

Dentcho A. Genov, Andrey K. Sarychev, and Vladimir M Shalaev "Localization-delocalization transition in metal-dielectric films", Proc. SPIE 5512, Plasmonics: Metallic Nanostructures and Their Optical Properties II, (19 October 2004); https://doi.org/10.1117/12.555735

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Surface plasmons

Metals

Chemical elements

Transition metals

Dielectrics

Composites

Particles

Show All Keywords

Keywords/Phrases

Search In:

Publication Years