Eiles, T.
, Devoret, M.
and Martinis, J.
(1994),
Coulomb Blockade of Andreev Reflection in the NSN Single Electron Transistor, Physica B-Condensed Matter
(Accessed September 12, 2024)
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Coulomb Blockade of Andreev Reflection in the NSN Single Electron Transistor
Published
Author(s)
Travis M. Eiles, Michel H. Devoret,
Abstract
We have measured at low temperatures the current through a submicrometer superconducting island connected to nornal metal leads by ultrasmall tunnel junctions. At low bias voltages, the current changes from being e-periodic in the applied gate change to 2e-periodic. We interpret this 2e-periodic current as a manifestation of a sequence of Andreev reflection events which transports two electrons at a time across the island. This behavior is clear evidence that there is a difference in total energy between ground states of differing electron number parity.Citation
Physica B-Condensed Matter
Volume
194
Issue
Part 1
Pub Type
Journals
Keywords
Andreev reflection, Coulomb blockade, general superconductivity, ultra-small tunnel junctions
Citation
Issues
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Created January 31, 1994, Updated October 12, 2021