Absence of extended states in a ladder model of DNA

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dc.creatorDiaz, E.
dc.creatorSedrakyan, A.
dc.creatorSedrakyan, D.
dc.creatorDominguez-Adame, F.
dc.date2006-05-16
dc.date.accessioned2026-07-07T07:39:19Z
dc.date.available2026-07-07T07:39:19Z
dc.descriptionWe consider a ladder model of DNA for describing carrier transport in a fully coherent regime through finite segments. A single orbital is associated to each base, and both interstrand and intrastrand overlaps are considered within the nearest-neighbor approximation. Conduction through the sugar-phosphate backbone is neglected. We study analytically and numerically the spatial extend of the corresponding states by means of the Landauer and Lyapunov exponents. We conclude that intrinsic-DNA correlations, arising from the natural base pairing, does not suffice to observe extended states, in contrast to previous claims.
dc.description4 RevTex pages, 4 figures included
dc.identifierhttps://arxiv.org/abs/cond-mat/0605403
dc.identifierhttp://arxiv.org/abs/cond-mat/0605403
dc.identifierPhys. Rev. B 75, 014201 (2007)
dc.identifierdoi:10.1103/PhysRevB.75.014201
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/121405
dc.subjectDisordered Systems and Neural Networks
dc.subjectSoft Condensed Matter
dc.titleAbsence of extended states in a ladder model of DNA
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