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dc.contributor.authorKarlsson, Daniel
dc.contributor.authorVerdozzi, Claudio
dc.date.accessioned2016-08-22T10:55:24Z
dc.date.available2016-08-22T10:55:24Z
dc.date.issued2016
dc.identifier.citationKarlsson, D., & Verdozzi, C. (2016). Effective bias and potentials in steady-state quantum transport : A NEGF reverse-engineering study. In <em>Progress in Non-equilibrium Green’s Functions (PNGF VI)</em> (pp. 012018). Journal of Physics: Conference Series, 696. Institute of Physics Publishing Ltd.. <a href="http://dx.doi.org/10.1088/1742-6596/696/1/012018">doi:10.1088/1742-6596/696/1/012018</a>
dc.identifier.otherTUTKAID_70782
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/50991
dc.description.abstractUsing non-equilibrium Green’s functions combined with many-body perturbation theory, we have calculated steady-state densities and currents through short interacting chains subject to a finite electric bias. By using a steady-state reverse-engineering procedure, the effective potential and bias which reproduce such densities and currents in a non-interacting system have been determined. The role of the effective bias is characterised with the aid of the so-called exchange-correlation bias, recently introduced in a steady-state density-functionaltheory formulation for partitioned systems. We find that the effective bias (or, equivalently, the exchange-correlation bias) depends strongly on the interaction strength and the length of the central (chain) region. Moreover, it is rather sensitive to the level of many-body approximation used. Our study shows the importance of the effective/exchange-correlation bias out of equilibrium, thereby offering hints on how to improve the description of densityfunctional-theory based approaches to quantum transport.
dc.language.isoeng
dc.publisherInstitute of Physics Publishing Ltd.
dc.relation.ispartofProgress in Non-equilibrium Green s Functions (PNGF VI)
dc.relation.ispartofseriesJournal of Physics: Conference Series;696
dc.subject.otherGreen's functions
dc.subject.othercomplex systems
dc.titleEffective bias and potentials in steady-state quantum transport : A NEGF reverse-engineering study
dc.typeconferenceObject
dc.identifier.urnURN:NBN:fi:jyu-201608013707
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/ConferencePaper
dc.date.updated2016-08-01T12:15:03Z
dc.type.coarconference paper
dc.description.reviewstatuspeerReviewed
dc.relation.issn1742-6588
dc.type.versionpublishedVersion
dc.rights.copyright© Published under licence by IOP Publishing Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY) licence.
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttp://creativecommons.org/licenses/by/3.0/
dc.relation.doi10.1088/1742-6596/696/1/012018


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© Published under licence by IOP Publishing Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY) licence.
Except where otherwise noted, this item's license is described as © Published under licence by IOP Publishing Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY) licence.