Non adiabatic features of electron pumping through a quantum dot in the Kondo regime

Details Non adiabatic features of electron pumping through a quantum dot in the Kondo regime Non adiabatic features of electron pumping through a quantum dot in the Kondo regime

2007-11-27

arxiv.org/abs/0711.4200v1

Phys. Rev. B 77, 165326 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 7 figures

Scientific paper

10.1103/PhysRevB.77.165326

We investigate the behavior of the dc electronic current, Jdc, in an interacting quantum dot driven by two ac local potentials oscillating with a frequency, Omega0, and a phase-lag, phi. We provide analytical functions to describe the fingerprints of the Coulomb interaction in an experimental Jdc vs phi characteristic curve. We show that the Kondo resonance reduces at low temperatures the frequency range for the linear behavior of Jdc in Omega0 to take place and determines the evolution of the dc-current as the temperature increases.

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