Electron pair current through the correlated quantum dot

Details Electron pair current through the correlated quantum dot Electron pair current through the correlated quantum dot

2009-01-27

arxiv.org/abs/0901.4248v1

phys. stat. sol. (b) 246, 985 (2009).

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures

Scientific paper

10.1002/pssb.200881552

We study the charge current transmitted through the correlated quantum dot characterized by a finite magnitude of the Coulomb interaction |U|. At low temperatures the correlations can lead to appearance of the spin (for U>0) or charge (for U<0) Kondo states qualitatively affecting the transport properties. We explore an influence of the charge Kondo effect on the electron pair tunneling introducing the auxiliary two-component model which describes the fluctuations between empty and doubly occupied states of the quantum dot.

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