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cond-mat2003
Adiabatic quantum pump in the presence of external ac voltages
M. Moskalets, M. Buttiker
We investigate a quantum pump which in addition to its dynamic pump parameters is subject to oscillating external potentials applied to the contacts of the sample. Of interest is t…
cond-mat.mes-hall2003
Quantum pumping: Coherent Rings versus Open Conductors
M. Moskalets, M. Buttiker
We examine adiabatic quantum pumping generated by an oscillating scatterer embedded in a one-dimensional ballistic ring and compare it with pumping caused by the same scatterer con…
cond-mat.mes-hall2003
Hidden quantum pump effects in quantum coherent rings
M. Moskalets, M. Buttiker
Time periodic perturbations of an electron system on a ring are examined. For small frequencies periodic small amplitude perturbations give rise to side band currents which in lead…