publication . Article . Preprint . 2009

Conductance through a redox system in the Coulomb blockade regime: Many-particle effects and influence of electronic correlations

Sabine Tornow; Gertrud Zwicknagl;
Open Access
  • Published: 27 Nov 2009 Journal: physica status solidi (RRL) - Rapid Research Letters, volume 4, pages 46-48 (issn: 1862-6254, Copyright policy)
  • Publisher: Wiley
Abstract
We investigate the transport characteristics of a redox system weakly coupled to leads in the Coulomb blockade regime. The redox system comprises a donor and acceptor separated by an insulating bridge in a solution. It is modeled by a two-site extended Hubbard model which includes on-site and inter-site Coulomb interactions and the coupling to a bosonic bath. The current voltage characteristics is calculated at high temperatures using a rate equation approach. For high voltages exceeding the Coulomb repulsion at the donor site the calculated transport characteristics exhibit pronounced deviations from the behavior expected from single-electron transport. Dependi...
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Subjects
arXiv: Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
free text keywords: General Materials Science, Condensed Matter Physics, Condensed Matter - Strongly Correlated Electrons, Particle system, Hubbard model, Physics, Coulomb blockade, Coulomb, Coupling, Rate equation, Acceptor, Conductance
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