Transport theory of coupled quantum dots based on auxiliary operator method

Details Transport theory of coupled quantum dots based on auxiliary operator method Transport theory of coupled quantum dots based on auxiliary operator method

2010-10-08

arxiv.org/abs/1010.1576v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

16pages, 5 figures

Scientific paper

We 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 non-equilibrium Green's function method under the non-crossing approximation (NCA). Our formulation generalizes the previous NCA approaches by allowing full occupation numbers with a finite Coulomb repulsion.

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