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Author Kong, Dexin ♦ Jiang, Liying ♦ Drucker, Jeff
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ CRYSTAL STRUCTURE ♦ DIELECTRIC MATERIALS ♦ DIPOLES ♦ ELECTRONS ♦ ENERGY RANGE ♦ EPITAXY ♦ MORPHOLOGY ♦ PLASMONS ♦ SILICON ♦ SIMULATION ♦ SPECTRA ♦ SURFACES ♦ THIN FILMS
Abstract Associating features in the experimentally measured optical response of epitaxial Ag islands grown on Si(100) with the localized surface plasmon resonances (LSPRs) hosted by the Ag islands is challenging due to the variation of the Si dielectric function over the energy range under consideration. However, it is possible to conclusively identify features in the experimental spectra with LSPR modes oscillating both parallel and perpendicular to the epitaxial interface by simulating the optical response. The Abeles matrix method is used to describe the composite layered system and the Ag islands are modeled using the thin island film model developed by Bedeaux and Vlieger. By incorporating island morphology parameters determined by quantitative analysis of electron micrographs, the simulation faithfully reproduces the main features of the experimental spectra. Individually zeroing the dipoles associated with the LSPR modes enables conclusive identification of their contribution to the optical response of the composite system.
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-12-07
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 118
Issue Number 21


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