Charge and spin configurations in the coupled quantum dots with Coulomb correlations induced by tunneling current

Abstract

We investigated the peculiarities of non-equilibrium charge states and spin configurations in the system of two strongly coupled quantum dots (QDs) weakly connected to the electrodes in the presence of Coulomb correlations. We analyzed the modification of non-equilibrium charge states and different spin configurations of the system in a wide range of applied bias voltage and revealed well pronounced ranges of system parameters where negative tunneling conductivity appears due to the Coulomb correlations.

10 pages, 6 figures

References in corpus (6)

• Nonequilibrium Transport through a Kondo Dot in a Magnetic Field: Perturbation Theory
• Nonequilibrium Transport through a Kondo Dot: Decoherence Effects
• Transport through a double quantum dot system with non-collinearly polarized leads
• Charged excitons and biexcitons in laterally coupled InGaAs quantum dots
• Spin-polarized transport through weakly coupled double quantum dots in the Coulomb-blockade regime
• Formation of pure two-electron triplet states in weakly coupled quantum dots attached to ferromagnetic leads