Shot noise measurements in diffusive normal metal-superconductor (N-S) junctions.

Authors
Kozhevnikov, AA Schoelkopf, RJ Calvet, LE Rooks, MJ Prober, DE
Citation
Aa. Kozhevnikov et al., Shot noise measurements in diffusive normal metal-superconductor (N-S) junctions., J L TEMP PH, 118(5-6), 2000, pp. 671-678
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF LOW TEMPERATURE PHYSICS
ISSN journal
00222291 → ACNP
Volume
118
Issue
5-6
Year of publication
2000
Pages
671 - 678
Database
ISI
SICI code
0022-2291(200003)118:5-6<671:SNMIDN>2.0.ZU;2-N
Abstract
We report on the measurements of non-equilibrium noise in diffusive normal metal - superconductor (N-S) junctions. We observe that at bias voltages le ss than the gap voltage the shot noise is doubled compared to the normal di ffusive conductor, in agreement with theoretical predictions. We also obser ve that the crossover from the thermal to shot noise occurs at bias voltage s smaller than for the normal conductor, in qualitative agreement with theo ry.