Photodoping of 60K and 90 KYBaCuO grain boundary Josephson junctions

Authors
Medici, MG Gilabert, A Schmidl, F Seidel, P
Citation
Mg. Medici et al., Photodoping of 60K and 90 KYBaCuO grain boundary Josephson junctions, PHYSICA C, 341, 2000, pp. 1461-1462
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
341
Year of publication
2000
Part
3
Pages
1461 - 1462
Database
ISI
SICI code
0921-4534(200011)341:<1461:PO6A9K>2.0.ZU;2-K
Abstract
We have illuminated with UV or visible light YBaCuO grain boundary Josephso n junctions (GBJJ) of different critical temperatures of the banks (90K and 60K). These GBJJ show both de Josephson properties (Fraunhofer pattern) an d ac Josephson properties (Fiske resonance). From the decrease of the norma l state resistance we can estimate the oxygen content of the barrier which is lower in the 60 K junctions. The relative increase of the critical curre nt by illumination is higher in the 60 K than in the 90K junctions..