Non-equilibrium theory for strongly coupled quantum dot with arbitrary on-site correlation strength

Abstract

An analytical expression for the current through a single level quantum dot for arbitrary strength of the on-site electron-electron interaction is derived beyond standard mean-field theory. By describing the localised states in terms of many-body operators, the employed diagrammatic technique for strong coupling enables inclusion of electron correlation effects into the description of the local dynamics, which provides transport properties that are consistent with recent experimental data.

arXiv comment14 pages, 4 figures

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