Absence of weak localization in two-dimensional disordered Frenkel lattices

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dc.creatorRodriguez, A.
dc.creatorMartin-Delgado, M. A.
dc.creatorRodriguez-Laguna, J.
dc.creatorSierra, G.
dc.creatorMalyshev, V. A.
dc.creatorDominguez-Adame, F.
dc.creatorLemaistre, J. P.
dc.date2002-01-29
dc.date.accessioned2026-07-07T02:44:17Z
dc.date.available2026-07-07T02:44:17Z
dc.descriptionThe standard one-parameter scaling theory predicts that all eigenstates in two-dimensional random lattices are weakly localized. We show that this claim fails in two-dimensional dipolar Frenkel exciton systems. The linear energy dispersion at the top of the exciton band, originating from the long-range inter-site coupling of dipolar nature, yields the same size-scaling law for the level spacing and the effective disorder seen by the exciton. This finally results in the delocalization of those eigenstates in the thermodynamic limit. Large scale numerical simulations allow us to perform a detailed multifractal analysis and to elucidate the nature of the excitonic eigenstates.
dc.descriptionREVTeX 3, 3 Postscript figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0201535
dc.identifierhttp://arxiv.org/abs/cond-mat/0201535
dc.identifierJ. Lumin. vol 94-95 (2001) 359
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/18854
dc.subjectDisordered Systems and Neural Networks
dc.titleAbsence of weak localization in two-dimensional disordered Frenkel lattices
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