Non-equilibrium experiments in LTS Josephson double tunnel devices

Citation
G. Ammendola et al., Non-equilibrium experiments in LTS Josephson double tunnel devices, IEEE APPL S, 9(2), 1999, pp. 3974-3977
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN journal
10518223 → ACNP
Volume
9
Issue
2
Year of publication
1999
Part
3
Pages
3974 - 3977
Database
ISI
SICI code
1051-8223(199906)9:2<3974:NEILJD>2.0.ZU;2-P
Abstract
Superconducting Tunnel Junctions (STJ) are promising devices as a next gene ration of nuclear and optical detectors Non-equilibrium experiments can pro ,ide useful information on the behaviour of a perturbed superconductor. Amo ng possible non-equilibrium sources, we used quasi-particle injection in th ree-terminal double tunnel junction de,ices and a laser pumping source. We investigated the effect of perturbed renditions on sub-harmonic gap structu res, which are present in I-V characteristics of high quality Nb-based STJs . Experimental results concerning the change of the energy gap measured at V=2 Delta/2e show features which can not be completely explained in terms o f simple heating effects.