Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2005-02-11
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 1 figure. submitted to the Physcal Review Letters
Scientific paper
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.
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