High frequency limit for single-electron pumping operations

Details High frequency limit for single-electron pumping operations High frequency limit for single-electron pumping operations

2010-12-04

arxiv.org/abs/1012.0878v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages 5 figures

Scientific paper

In this Letter, we study the transient electron transfer phenomena of single-electron devices with alternating external gate voltages. We obtain a high frequency limit for pumping electrons one at a time in single-electron devices. Also, we find that in general the electrical current is not proportional to the frequency of the external signals in the single-electron devices, due to the strong quantum coherence tunneling effect.

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