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Theory of current-voltage asymmetries in double quantum dots
KTH, Superseded Departments, Materials Science and Engineering.
2004 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 69, no 20, 201304- p.Article in journal (Refereed) Published
Abstract [en]

An explanation for the asymmetries in the current-voltage characteristics in mesoscopic quantum systems weakly coupled to reservoirs is proposed. Thus, it is suggested that inelastic scattering between the states in the interacting region dynamically redistributes the tunneling rate through the system. This redistribution functions non-uniformly for negative and positive bias voltages. Based on a diagrammatic technique for non-equilibrium many-body operator Green functions, an expression is presented that accounts for these scattering effects between the states. The theory is consistent with recent experimental data on mesoscopic systems.

Place, publisher, year, edition, pages
2004. Vol. 69, no 20, 201304- p.
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-44923DOI: 10.1103/PhysRevB.69.201304ISI: 000222095700008Scopus ID: 2-s2.0-42749101334OAI: oai:DiVA.org:kth-44923DiVA: diva2:453393
Note
QC 20111102Available from: 2011-11-02 Created: 2011-10-26 Last updated: 2017-12-08Bibliographically approved

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