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Article: Collective electronic states in inhomogeneous media at critical and subcritical metal concentrations

TitleCollective electronic states in inhomogeneous media at critical and subcritical metal concentrations
Authors
Issue Date2007
PublisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prb/
Citation
Physical Review B (Condensed Matter and Materials Physics), 2007, v. 75 n. 20, article no. 201403 How to Cite?
AbstractThe excitation of collective electronic states, surface plasmons (SPs), is studied for semicontinuous metal films at various metal concentrations. A previously unexpected strong optical response, manifested through an increase in the exponents of the local field moments, is predicted at noncritical metal concentrations. This phenomenon results from an increase in SP localization away from the percolation threshold, which is opposite to the general understanding that a decrease in the number of scatters leads to weaker mode localization. Experimental results from near-field optical microscopy are found to be in good agreement with the theory, validating the role of SP localization in the optical response. Possible applications in improving the sensitivity of spectroscopic measurements such as surface-enhanced Raman scattering and harmonic generation are considered. © 2007 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/256946
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorGenov, Dentcho A.-
dc.contributor.authorSeal, Katyayani-
dc.contributor.authorZhang, Xiang-
dc.contributor.authorShalaev, Vladimir M.-
dc.contributor.authorSarychev, Andrey K.-
dc.contributor.authorYing, Z. Charles-
dc.contributor.authorCao, Hui-
dc.date.accessioned2018-07-24T08:58:24Z-
dc.date.available2018-07-24T08:58:24Z-
dc.date.issued2007-
dc.identifier.citationPhysical Review B (Condensed Matter and Materials Physics), 2007, v. 75 n. 20, article no. 201403-
dc.identifier.issn1098-0121-
dc.identifier.urihttp://hdl.handle.net/10722/256946-
dc.description.abstractThe excitation of collective electronic states, surface plasmons (SPs), is studied for semicontinuous metal films at various metal concentrations. A previously unexpected strong optical response, manifested through an increase in the exponents of the local field moments, is predicted at noncritical metal concentrations. This phenomenon results from an increase in SP localization away from the percolation threshold, which is opposite to the general understanding that a decrease in the number of scatters leads to weaker mode localization. Experimental results from near-field optical microscopy are found to be in good agreement with the theory, validating the role of SP localization in the optical response. Possible applications in improving the sensitivity of spectroscopic measurements such as surface-enhanced Raman scattering and harmonic generation are considered. © 2007 The American Physical Society.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prb/-
dc.relation.ispartofPhysical Review B (Condensed Matter and Materials Physics)-
dc.titleCollective electronic states in inhomogeneous media at critical and subcritical metal concentrations-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevB.75.201403-
dc.identifier.scopuseid_2-s2.0-34347351199-
dc.identifier.volume75-
dc.identifier.issue20-
dc.identifier.spagearticle no. 201403-
dc.identifier.epagearticle no. 201403-
dc.identifier.eissn1550-235X-
dc.identifier.isiWOS:000246890900011-

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