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TitleTransport theory of coupled quantum dots based on the auxiliary-operator method
Publication TypeJournal Article
Year of Publication2011
AuthorsOh, J.H., Ahn D., and Bubanja V.
JournalPhysical Review B - Condensed Matter and Materials Physics
Date Published2011
ISSN10980121 (ISSN)
AbstractWe formulate the theory of electron transport through coupled quantum dots by extending the auxiliary-operator representation. By using the generating functional technique, we derive the exact expressions for currents, dot-occupation numbers, and spin correlations, and examine them based on the nonequilibrium Green's function method under the noncrossing approximation (NCA). Our formulation generalizes the previous NCA approaches by allowing full occupation numbers with a finite Coulomb repulsion. © 2011 American Physical Society.

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