Coherent charge transport through molecular wires: influence of strong Coulomb repulsion

  • We derive a master equation for the electron transport through molecular wires in the limit of strong Coulomb repulsion. This approach is applied to two typical situations: First, we study transport through an open conduction channel for which we find that the current exhibits an ohmic-like behaviour. Second, we explore the transport properties of a bridged molecular wire, where the current decays exponentially as a function of the wire length. For both situations, we discuss the differences to the case of non-interacting electrons.

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Author:Michael StrassGND, Sigmund KohlerORCiDGND, Peter HänggiORCiDGND
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Publishing Institution:Universität Augsburg
Release Date:2006/09/01
Tag:Molecular wires; Quantum transport; Coulomb repulsion
GND-Keyword:Molekularer Draht; Transportprozess; Coulomb-Blockade
Source:erschienen in: Chem. Phys. 322, 193–199 (2006); doi:10.1016/j.chemphys.2005.08.005; URL:
Institutes:Mathematisch-Naturwissenschaftlich-Technische Fakultät
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Theoretische Physik I
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik