Cluster-based density-functional approach to quantum transport through molecular and atomic contacts

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dc.creatorPauly, F.
dc.creatorViljas, J. K.
dc.creatorHuniar, U.
dc.creatorHafner, M.
dc.creatorWohlthat, S.
dc.creatorBurkle, M.
dc.creatorCuevas, J. C.
dc.creatorSchon, G.
dc.date2008-06-25
dc.date.accessioned2026-07-07T12:08:58Z
dc.date.available2026-07-07T12:08:58Z
dc.descriptionWe present a cluster-based density-functional approach to model charge transport through molecular and atomic contacts. The electronic structure of the contacts is determined in the framework of density functional theory, and the parameters needed to describe transport are extracted from finite clusters. A similar procedure, restricted to nearest-neighbor interactions in the electrodes, has been presented by Damle et al. [Chem. Phys. 281, 171 (2002)]. Here, we show how to systematically improve the description of the electrodes by extracting bulk parameters from sufficiently large metal clusters. In this way we avoid problems arising from the use of nonorthogonal basis functions. For demonstration we apply our method to electron transport through Au contacts with various atomic-chain configurations and to a single-atom contact of Al.
dc.description18 pages, 13 figures
dc.identifierhttps://arxiv.org/abs/0806.4173
dc.identifierhttp://arxiv.org/abs/0806.4173
dc.identifierNew J. Phys. 10, 125019 (2008)
dc.identifierdoi:10.1088/1367-2630/10/12/125019
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/209478
dc.subjectMesoscale and Nanoscale Physics
dc.subjectMaterials Science
dc.titleCluster-based density-functional approach to quantum transport through molecular and atomic contacts
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