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Proceedings Paper

Extraordinary localization of collective electronic states in random media
Author(s): Dentcho A. Genov; Xiang Zhang; Katyayani Seal; Heeso Noh; Hui Cao; Z. Charles Ying; Andrey K. Sarychev; Vladimir M. Shalaev
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Paper Abstract

The surface plasmons (SPs) eigenproblem which arises in inhomogeneous metal-dielectric films is studied at resonance conditions. We show that short-range correlations present in the governing Kirchhoff Hamiltonian (KH) result in delocalization of the eigenstates at the center of the spectrum. The delocalization is manifested as a power law/logarithmic singularity for the density of states and SPs localization lengths. Based on the SPs eigenproblem, analytical relationships are derived for the electromagnetic response of the semicontinuous film in resonance and off-resonance regimes. Experimental studies indirectly confirm the existence of delocalized SP states in the random system.

Paper Details

Date Published: 14 September 2006
PDF: 10 pages
Proc. SPIE 6320, Complex Photonic Media, 63200X (14 September 2006); doi: 10.1117/12.679870
Show Author Affiliations
Dentcho A. Genov, Univ. of California/Berkeley (United States)
Xiang Zhang, Univ. of California/Berkeley (United States)
Katyayani Seal, Northwestern Univ. (United States)
Heeso Noh, Northwestern Univ. (United States)
Hui Cao, Northwestern Univ. (United States)
Z. Charles Ying, National Science Foundation (United States)
Andrey K. Sarychev, Ethertronics Inc. (United States)
Vladimir M. Shalaev, Purdue Univ. (United States)

Published in SPIE Proceedings Vol. 6320:
Complex Photonic Media
Graeme Dewar; Martin W. McCall; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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