Transport theory of coupled quantum dots based on auxiliary operator method
arXiv:1010.1576 · doi:10.1103/PhysRevB.83.205302
Abstract
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.
arXiv comment16pages, 5 figures
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