Adiabatic Charge Pumping through Quantum Dots in the Coulomb Blockade Regime

Details Adiabatic Charge Pumping through Quantum Dots in the Coulomb Blockade Regime Adiabatic Charge Pumping through Quantum Dots in the Coulomb Blockade Regime

2009-06-30

arxiv.org/abs/0907.0038v2

Phys. Rev. B 80, 115311 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, 10 figures

Scientific paper

10.1103/PhysRevB.80.115311

We investigate the influence of the Coulomb interaction on the adiabatic pumping current through quantum dots. Using nonequilibrium Green's functions techniques, we derive a general expression for the current based on the instantaneous Green's function of the dot. We apply this formula to study the dependence of the charge pumped per cycle on the time-dependent pumping potentials. The possibility of charge quantization in the presence of a finite Coulomb repulsion energy is investigated in the light of recent experiments.

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