Proximity Induced Josephson-Quasiparticle Process in a Single Electron Transistor

Details Proximity Induced Josephson-Quasiparticle Process in a Single Electron Transistor Proximity Induced Josephson-Quasiparticle Process in a Single Electron Transistor

1998-11-02

arxiv.org/abs/cond-mat/9811014v1

Physics

Condensed Matter

Superconductivity

4 pages + 4 figures

Scientific paper

10.1103/PhysRevB.59.R14161

We have performed the first experiments in a superconductor - normal metal - superconductor single electron transistor in which there is an extra superconducting strip partially overlapping the normal metal island in good metal-to-metal contact. Superconducting proximity effect gives rise to current peaks at voltages below the quasiparticle threshold. We interpret these peaks in terms of the Josephson-quasiparticle process and discuss their connection with the proximity induced energy gap in the normal metal island.

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