Accuracy of the coherent potential approximation for a one-dimensional Frenkel exciton system with a Gaussian distribution of fluctuations in the optical transition frequency

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dc.contributor.authorAvgin, I.
dc.contributor.authorBoukahil, A.
dc.contributor.authorHuber, D. L.
dc.date.accessioned2019-10-27T21:16:46Z
dc.date.available2019-10-27T21:16:46Z
dc.date.issued2010
dc.departmentEge Üniversitesien_US
dc.description.abstractWe investigate the accuracy of the coherent potential approximation (CPA) for a one-dimensional Frenkel exciton system with nearest-neighbor interactions and a Gaussian distribution of fluctuations in the optical transition frequency. The CPA values of the integrated density of states and the inverse localization length are shown to be in excellent agreement with the results of mode-counting studies carried out on arrays of 10(7)-10(8) sites. We also consider the asymptotic behavior of the inverse localization length and show that it can be approximated by the reciprocal of the decay length of an eigenstate localized about a single, strongly perturbed site in an otherwise perfect lattice. (C) 2010 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK)en_US
dc.description.sponsorshipWe would like to thank S.M. Vlaming for providing details on the results reported in Ref. [12]. I. Avgin would like to thank the Scientific and Technological Research Council of Turkey (TUBITAK) for their partial support. I. Avgin also thanks A. Savran and T. Oguzer for having invaluable discussions.en_US
dc.identifier.doi10.1016/j.physe.2010.05.011
dc.identifier.endpage2334en_US
dc.identifier.issn1386-9477
dc.identifier.issn1386-9477en_US
dc.identifier.issue9en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage2331en_US
dc.identifier.urihttps://doi.org/10.1016/j.physe.2010.05.011
dc.identifier.urihttps://hdl.handle.net/11454/43720
dc.identifier.volume42en_US
dc.identifier.wosWOS:000280897700027en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofPhysica E-Low-Dimensional Systems & Nanostructuresen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectOne-dimensional Frenkel exciton systemen_US
dc.subjectGaussian distribution of transition frequenciesen_US
dc.subjectCoherent potential approximationen_US
dc.subjectComparison with mode-counting resultsen_US
dc.titleAccuracy of the coherent potential approximation for a one-dimensional Frenkel exciton system with a Gaussian distribution of fluctuations in the optical transition frequencyen_US
dc.typeArticleen_US

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