Incoherent exciton trapping in self-similar aperiodic lattices

Incoherent exciton dynamics in one-dimensional perfect lattices with traps at sites arranged according to aperiodic deterministic sequences is studied. We focus our attention on Thue-Morse and Fibonacci systems as canonical examples of self-similar aperiodic systems. Solving numerically the correspo...

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Detalles Bibliográficos
Autores: Domínguez-Adame Acosta, Francisco, Maciá Barber, Enrique Alfonso, Sánchez, Angel
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:20.500.14352/60200
Acceso en línea:https://hdl.handle.net/20.500.14352/60200
Access Level:acceso abierto
Palabra clave:538.9
Spectral properties
Electronic-properties
Random superlattices
Phonon properties
Acoustic phonons
Fibonacci-chain
Thue-morse
Quasicrystal
System
States
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
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oai_identifier_str oai:docta.ucm.es:20.500.14352/60200
network_acronym_str ES
network_name_str España
repository_id_str
spelling Incoherent exciton trapping in self-similar aperiodic latticesDomínguez-Adame Acosta, FranciscoMaciá Barber, Enrique AlfonsoSánchez, Angel538.9Spectral propertiesElectronic-propertiesRandom superlatticesPhonon propertiesAcoustic phononsFibonacci-chainThue-morseQuasicrystalSystemStatesFísica de materialesFísica del estado sólido2211 Física del Estado SólidoIncoherent exciton dynamics in one-dimensional perfect lattices with traps at sites arranged according to aperiodic deterministic sequences is studied. We focus our attention on Thue-Morse and Fibonacci systems as canonical examples of self-similar aperiodic systems. Solving numerically the corresponding master equation we evaluate the survival probability and the mean-square displacement of an exciton initially created at a single site. Results are compared to systems of the same size with the same concentration of traps randomly as well as periodically distributed over the whole lattice. Excitons progressively extend over the lattice on increasing time and, in this sense, they act as a probe of the particular arrangements of traps in each system considered. The analysis of the characteristic features of their time decay indicates that exciton dynamics in self-similar aperiodic arrangements of traps is quite close to that observed in periodic ones, but di8'ers significantly from that corresponding to random lattices. We also report on characteristic features of exciton motion suggesting that Fibonacci and Thue-Morse orderings might be clearly observed by appropriate experimental measurements. In the conclusions we comment on the implications of our work on the way towards a unified theory of the ordering of matter.American Physical SocietyUniversidad Complutense de Madrid19951995-01-0119951995-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/60200reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/602002026-06-02T12:44:21Z
dc.title.none.fl_str_mv Incoherent exciton trapping in self-similar aperiodic lattices
title Incoherent exciton trapping in self-similar aperiodic lattices
spellingShingle Incoherent exciton trapping in self-similar aperiodic lattices
Domínguez-Adame Acosta, Francisco
538.9
Spectral properties
Electronic-properties
Random superlattices
Phonon properties
Acoustic phonons
Fibonacci-chain
Thue-morse
Quasicrystal
System
States
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
title_short Incoherent exciton trapping in self-similar aperiodic lattices
title_full Incoherent exciton trapping in self-similar aperiodic lattices
title_fullStr Incoherent exciton trapping in self-similar aperiodic lattices
title_full_unstemmed Incoherent exciton trapping in self-similar aperiodic lattices
title_sort Incoherent exciton trapping in self-similar aperiodic lattices
dc.creator.none.fl_str_mv Domínguez-Adame Acosta, Francisco
Maciá Barber, Enrique Alfonso
Sánchez, Angel
author Domínguez-Adame Acosta, Francisco
author_facet Domínguez-Adame Acosta, Francisco
Maciá Barber, Enrique Alfonso
Sánchez, Angel
author_role author
author2 Maciá Barber, Enrique Alfonso
Sánchez, Angel
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 538.9
Spectral properties
Electronic-properties
Random superlattices
Phonon properties
Acoustic phonons
Fibonacci-chain
Thue-morse
Quasicrystal
System
States
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
topic 538.9
Spectral properties
Electronic-properties
Random superlattices
Phonon properties
Acoustic phonons
Fibonacci-chain
Thue-morse
Quasicrystal
System
States
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
description Incoherent exciton dynamics in one-dimensional perfect lattices with traps at sites arranged according to aperiodic deterministic sequences is studied. We focus our attention on Thue-Morse and Fibonacci systems as canonical examples of self-similar aperiodic systems. Solving numerically the corresponding master equation we evaluate the survival probability and the mean-square displacement of an exciton initially created at a single site. Results are compared to systems of the same size with the same concentration of traps randomly as well as periodically distributed over the whole lattice. Excitons progressively extend over the lattice on increasing time and, in this sense, they act as a probe of the particular arrangements of traps in each system considered. The analysis of the characteristic features of their time decay indicates that exciton dynamics in self-similar aperiodic arrangements of traps is quite close to that observed in periodic ones, but di8'ers significantly from that corresponding to random lattices. We also report on characteristic features of exciton motion suggesting that Fibonacci and Thue-Morse orderings might be clearly observed by appropriate experimental measurements. In the conclusions we comment on the implications of our work on the way towards a unified theory of the ordering of matter.
publishDate 1995
dc.date.none.fl_str_mv 1995
1995-01-01
1995
1995-01-01
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/20.500.14352/60200
url https://hdl.handle.net/20.500.14352/60200
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
_version_ 1869413414290325504
score 15.300724

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