Non-adiabatic charge pump: an exact solution

Details Non-adiabatic charge pump: an exact solution Non-adiabatic charge pump: an exact solution

2002-11-24

arxiv.org/abs/cond-mat/0211536v1

Phys. Rev. B Vol.68, 155326 (2003)

Physics

Condensed Matter

Scientific paper

10.1103/PhysRevB.68.155326

We derived a general and exact expression of current for quantum parametric charge pumps in the non-adiabatic regime at finite pumping frequency and finite driving amplitude. The non-perturbative theory predicts a remarkable plateau structure in the pumped current due to multi-photon assisted processes in a double-barrier quantum well pump involving only a {\it single} pumping potential. It also predicts a current reversal as the resonant level of the pump crosses the Fermi energy of the leads.

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