ENHANCEMENT OF JOSEPHSON PHOTORESPONSE OF GRANULAR HIGH-T-C SUPERCONDUCTOR THIN-FILMS BY DEOXYGENATION

Authors
SCHNEIDER G BLAU W STANGL E BAUERLE D HUGGARD PG PRETTL W
Citation
G. Schneider et al., ENHANCEMENT OF JOSEPHSON PHOTORESPONSE OF GRANULAR HIGH-T-C SUPERCONDUCTOR THIN-FILMS BY DEOXYGENATION, Applied physics letters, 63(20), 1993, pp. 2827-2829
Citations number
18
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
63
Issue
20
Year of publication
1993
Pages
2827 - 2829
Database
ISI
SICI code
0003-6951(1993)63:20<2827:EOJPOG>2.0.ZU;2-X
Abstract
The dependence of the far infrared Josephson photoresponse of current biased granular high-T-c superconductor thin films on deoxygenation is presented. Bi2Sr2CaCu2O8 and TlBa2Ca2Cu3O9 thin films were heated in vacuum to temperatures of between 200 and 500 degrees C. The resulting deoxygenation weakens the intergrain coupling, thereby reducing the c ritical current and enhancing the photoresponse. In this way the optim um temperature for the fast Josephson response may be tuned to lie out side the temperature region of the slow bolometric signal.