Josephson junctions and superconducting field effect transistors based on epitaxial Bi2Sr2Can-1CunO2(n+2) thin films

Citation
U. Frey et al., Josephson junctions and superconducting field effect transistors based on epitaxial Bi2Sr2Can-1CunO2(n+2) thin films, APPL SUPERC, 6(7-9), 1998, pp. 429-436
Citations number
10
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED SUPERCONDUCTIVITY
ISSN journal
09641807 → ACNP
Volume
6
Issue
7-9
Year of publication
1998
Pages
429 - 436
Database
ISI
SICI code
0964-1807(199807/09)6:7-9<429:JJASFE>2.0.ZU;2-J
Abstract
Josephson junctions based on thin films of the Bi2Sr2Ca2Cu3O10 + delta comp ound show IcRn products compatible with YBa2Cu3O7 - delta samples. Using qu asiparticle tunneling experiments we found evidence for a superconductor-in sulator-superconductor tunneling process via localized states in the barrie r. The Bi2Sr2CaCu2O8 + delta compound is investigated regarding possible ap plications in superconducting field effect devices. We present thin films o f four unit cells thickness that are superconducting at 58 K. An inverted m etal-insulator-superconductor structure was prepared. From the modulation o f the normal slate resistance we estimate a carrier density of 7 x 10(19) c m for a superconducting sample. The shift of the transition temperature was 1 K/V. The modulation of the I-V characteristics was demonstrated. (C) 199 9 Elsevier Science Ltd. All rights reserved.