Non-equilibrium Kondo effect in asymmetrically coupled quantum dot

Details Non-equilibrium Kondo effect in asymmetrically coupled quantum dot Non-equilibrium Kondo effect in asymmetrically coupled quantum dot

2002-08-28

arxiv.org/abs/cond-mat/0208560v1

Phys. Rev. B66, 165408 (2002)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 6 figures, Physical Review B (accepted for publication)

Scientific paper

10.1103/PhysRevB.66.165408

The quantum dot asymmetrically coupled to the external leads has been analysed theoretically by means of the equation of motion (EOM) technique and the non-crossing approximation (NCA). The system has been described by the single impurity Anderson model. To calculate the conductance across the device the non-equilibrium Green's function technique has been used. The obtained results show the importance of the asymmetry of the coupling for the appearance of the Kondo peak at nonzero voltages and qualitatively explain recent experiments.

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