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APS » Journals » Phys. Rev. Lett. » Volume 96 » Issue 14
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Phys. Rev. Lett. 96, 146802 (2006) [4 pages]

Resonance Energy and Charge Pumping through Quantum SINIS Contacts

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N. B. Kopnin1,2, A. S. Mel’nikov3, and V. M. Vinokur4
1Low Temperature Laboratory, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Finland
2L. D. Landau Institute for Theoretical Physics, 117940 Moscow, Russia
3Institute for Physics of Microstructures, 603950, Nizhny Novgorod, GSP-105, Russia
4Argonne National Laboratory, Argonne, Illinois 60439, USA

Received 22 December 2005; published 12 April 2006

We propose a mechanism of quantum pumping mediated by the spectral flow in a voltage-biased superconductor/insulator/normal-metal/insulator/superconductor quantum junction and realized via the sequential closing of the minigaps in the energy spectrum in resonance with the Josephson frequency. We show that the pumped dc current exhibits giant peaks at rational voltages.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.146802
DOI:
10.1103/PhysRevLett.96.146802
PACS:
73.23.−b, 74.45.+c, 74.78.Na
 
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