Physics – Condensed Matter – Superconductivity
Scientific paper
2002-02-26
JETP Lett. 75, 326 (2002)
Physics
Condensed Matter
Superconductivity
RevTex, 5 pages, 4 figures
Scientific paper
10.1134/1.1485261
We present the results of low-temperature transport measurements on chains of superconductor--normal-constriction--superconductor (SNS) junctions fabricated on the basis of superconducting PtSi film. A comparative study of the properties of the chains, consisting of 3 and 20 SNS junctions in series, and single SNS junctions reveals essential distinctions in the behavior of the current-voltage characteristics of the systems: (i) the gradual decrease of the effective suppression voltage for the excess conductivity observed at zero bias as the quantity of the SNS junctions increases, (ii) a rich fine structure on the dependences dV/dI-V at dc bias voltages higher than the superconducting gap and corresponding to some multiples of 2\Delta/e. A model to explain this above-energy-gap structure based on energy relaxation of electron via Cooper-pair-breaking in superconducting island connecting normal metal electrods is proposed.
Baturina Tatyana. I.
Islamov D. R.
Kvon Ze Don
No associations
LandOfFree
Subgap anomaly and above-energy-gap structure in chains of diffusive SNS junctions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Subgap anomaly and above-energy-gap structure in chains of diffusive SNS junctions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subgap anomaly and above-energy-gap structure in chains of diffusive SNS junctions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-667807