Adiabatic pumping in the mixed-valence and Kondo regimes

Details Adiabatic pumping in the mixed-valence and Kondo regimes Adiabatic pumping in the mixed-valence and Kondo regimes

2003-11-23

arxiv.org/abs/cond-mat/0311526v2

Phys. Rev. Lett. 93, 116601 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

RevTeX, 4+pages, 4 figures, textual improvement

Scientific paper

10.1103/PhysRevLett.93.116601

We investigate adiabatic pumping through a quantum dot with a single level in the mixed-valence and Kondo regimes using the slave-boson mean field approximation. The pumped current is driven by a gauge potential due to time-dependent tunneling barriers as well as by the modulation of the Friedel phase. The sign of the former contribution depends on the strength of the Coulomb interaction. Under finite magnetic fields, the separation of the spin and charge currents peculiar to the Kondo effect occurs.

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