Proximity-induced Josephson-quasiparticle process in a single-electron transistor

A. J. Manninen*, R. S. Poikolainen, T. V. Ryynänen, J. P. Pekola

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review


We have performed 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. The 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.

Original languageEnglish
Pages (from-to)161-164
Number of pages4
JournalPhysical Review B
Issue number22
Publication statusPublished - 1 Jun 1999
MoE publication typeA1 Journal article-refereed

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