Abstract
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 language | English |
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Pages (from-to) | R14161-R14164 |
Journal | Physical Review B: Condensed Matter and Materials Physics |
Volume | 59 |
Issue number | 22 |
DOIs | |
Publication status | Published - 1999 |
MoE publication type | A1 Journal article-refereed |