NONLINEAR I-V CHARACTERISTICS AND PROXIMITY EFFECTS FOR PRBA2CU3O7-DELTA YBA2CU3O7-DELTA BILAYERED STRUCTURES GROWN ON (001)YBA2CU3O7-DELTASINGLE-CRYSTAL SUBSTRATES/

Authors
USAGAWA T ISHIMARU Y WEN JG UTAGAWA T KOYAMA S ENOMOTO Y
Citation
T. Usagawa et al., NONLINEAR I-V CHARACTERISTICS AND PROXIMITY EFFECTS FOR PRBA2CU3O7-DELTA YBA2CU3O7-DELTA BILAYERED STRUCTURES GROWN ON (001)YBA2CU3O7-DELTASINGLE-CRYSTAL SUBSTRATES/, Applied physics letters, 72(14), 1998, pp. 1772-1774
Citations number
12
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
72
Issue
14
Year of publication
1998
Pages
1772 - 1774
Database
ISI
SICI code
0003-6951(1998)72:14<1772:NICAPE>2.0.ZU;2-S
Abstract
We have observed superconductivity induced by proximity effects for 10 0 nm thick (001) PrBa2Cu3O7-delta films pseudomorphically grown on (00 1) YBa2Cu3O7-delta single crystal substrates by vertical four-probe me asurements. The induced superconductivity disappeared around 28 K and was recovered at around 15 K. The 220 nm thick (001) PrBa2Cu3O7-delta/ YBa2Cu3O7-delta bilayers show nonlinear I-V behavior with 0.2 mV built -in potential at low temperature below 50 K. The local maximum of the vertical resistance appears around 25 K. (C) 1998 American Institute o f Physics. [S0003-6951(98)03612-2].