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The Anderson Model out of equilibrium: Time dependent perturbations

Matthias H. Hettler·Herbert Schoeller
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Abstract

The influence of high-frequency fields on quantum transport through a quantum dot is studied in the low-temperature regime. We generalize the non crossing approximation for the infinite-U Anderson model to the time-dependent case. The dc spectral density shows asymmetric Kondo side peaks due to photon-assisted resonant tunneling. As a consequence we predict an electron-photon pump at zero bias which is purely based on the Kondo effect. In contrast to the resonant level model and the time-independent case we observe asymmetric peak amplitudes in the Coulomb oscillations and the differential conductance versus bias voltage shows resonant side peaks with a width much smaller than the tunneling rate. All the effects might be used to clarify the question whether quantum dots indeed show the Kondo effect.

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Matthias H. Hettler, Herbert Schoeller. 1994-11-26. The Anderson Model out of equilibrium: Time dependent perturbations. https://doi.org/10.1103/physrevlett.74.4907

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