SUPERCURRENTS IN C-AXIS PB BI2SR2CACU2O8 TUNNEL-JUNCTIONS/

Authors
KLEINER R MOSSLE M WALKENHORST W HECHTFISCHER G SCHLENGA K MULLER P
Citation
R. Kleiner et al., SUPERCURRENTS IN C-AXIS PB BI2SR2CACU2O8 TUNNEL-JUNCTIONS/, Physica. C, Superconductivity, 282, 1997, pp. 2435-2436
Citations number
6
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
282
Year of publication
1997
Part
4
Pages
2435 - 2436
Database
ISI
SICI code
0921-4534(1997)282:<2435:SICPBT>2.0.ZU;2-K
Abstract
We investigated Josephson junctions made on the surface of Bi2Sr2CaCu2 O8 single crystals with Pb as the counterelectrode. Junctions exhibit a clear lead gap at low temperatures as well as a nonzero supercurrent . In microwave fields Shapiro steps appear at multiples of hf/2e showi ng that the supercurrent is of first order. Consequences for a potenti al s-wave order parameter component in Bi2Sr2CaCu2O8 are discussed.