Interaction-induced adiabatic non-linear transport

Details Interaction-induced adiabatic non-linear transport Interaction-induced adiabatic non-linear transport

2010-04-19

arxiv.org/abs/1004.3166v1

Phys. Rev. Lett. 104, 226803 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures

Scientific paper

We calculate the time-dependent non-linear transport current through an interacting quantum dot in the single-electron tunneling regime (SET). We show that an additional dc current is generated by the electron-electron interaction by adiabatic out-of-phase modulation of the gate and bias voltage. This current can arise only when two SET resonance conditions are simultaneously satisfied. We propose an adiabatic transport spectroscopy where lock-in measurement of a "time-averaged stability diagram" probes interactions, tunnel asymmetries and changes in the ground state spin-degeneracy.

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