Frenkel excitons in random-systems with correlated gaussian disorder

Optical-absorption spectra of Frenkel excitons in random one-dimensional systems are presented. Two models of inhomogeneous broadening, arising from a Gaussian distribution of on-site energies, are considered. In one case the on-site energies are uncorrelated variables whereas in the second model th...

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Detalles Bibliográficos
Autor: Domínguez-Adame Acosta, Francisco
Tipo de recurso: artículo
Fecha de publicación:1995
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/59377
Acceso en línea:https://hdl.handle.net/20.500.14352/59377
Access Level:acceso abierto
Palabra clave:538.9
Random-Dimer Model
Conducting Polymers
Localization
Transport
Absence
Física de materiales
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spelling Frenkel excitons in random-systems with correlated gaussian disorderDomínguez-Adame Acosta, Francisco538.9Random-Dimer ModelConducting PolymersLocalizationTransportAbsenceFísica de materialesOptical-absorption spectra of Frenkel excitons in random one-dimensional systems are presented. Two models of inhomogeneous broadening, arising from a Gaussian distribution of on-site energies, are considered. In one case the on-site energies are uncorrelated variables whereas in the second model the on-site energies are pairwise correlated (dimers). We observe a red shift and a broadening of the absorption line on increasing the width of the Gaussian distribution. In the two cases we And that the shift is the same, within our numerical accuracy, whereas the broadening is larger when dimers are introduced. The increase of the width of the Gaussian distribution leads to larger differences between uncorrelated and correlated disordered models. We suggest that this higher broadening is due to stronger scattering effects from dimers.American Physical SocietyUniversidad Complutense de Madrid19951995-05-0119951995-05-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/59377reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/593772026-06-02T12:44:21Z
dc.title.none.fl_str_mv Frenkel excitons in random-systems with correlated gaussian disorder
title Frenkel excitons in random-systems with correlated gaussian disorder
spellingShingle Frenkel excitons in random-systems with correlated gaussian disorder
Domínguez-Adame Acosta, Francisco
538.9
Random-Dimer Model
Conducting Polymers
Localization
Transport
Absence
Física de materiales
title_short Frenkel excitons in random-systems with correlated gaussian disorder
title_full Frenkel excitons in random-systems with correlated gaussian disorder
title_fullStr Frenkel excitons in random-systems with correlated gaussian disorder
title_full_unstemmed Frenkel excitons in random-systems with correlated gaussian disorder
title_sort Frenkel excitons in random-systems with correlated gaussian disorder
dc.creator.none.fl_str_mv Domínguez-Adame Acosta, Francisco
author Domínguez-Adame Acosta, Francisco
author_facet Domínguez-Adame Acosta, Francisco
author_role author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 538.9
Random-Dimer Model
Conducting Polymers
Localization
Transport
Absence
Física de materiales
topic 538.9
Random-Dimer Model
Conducting Polymers
Localization
Transport
Absence
Física de materiales
description Optical-absorption spectra of Frenkel excitons in random one-dimensional systems are presented. Two models of inhomogeneous broadening, arising from a Gaussian distribution of on-site energies, are considered. In one case the on-site energies are uncorrelated variables whereas in the second model the on-site energies are pairwise correlated (dimers). We observe a red shift and a broadening of the absorption line on increasing the width of the Gaussian distribution. In the two cases we And that the shift is the same, within our numerical accuracy, whereas the broadening is larger when dimers are introduced. The increase of the width of the Gaussian distribution leads to larger differences between uncorrelated and correlated disordered models. We suggest that this higher broadening is due to stronger scattering effects from dimers.
publishDate 1995
dc.date.none.fl_str_mv 1995
1995-05-01
1995
1995-05-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/59377
url https://hdl.handle.net/20.500.14352/59377
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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