LASER-INDUCED MODIFICATION OF THE CRITICAL-CURRENT IN Y-BA-CU-O STEP-EDGE JOSEPHSON-JUNCTIONS

Authors
ADAM R KULA W MURDUCK JM PETTIETTEHALL C SOBOLEWSKI R
Citation
R. Adam et al., LASER-INDUCED MODIFICATION OF THE CRITICAL-CURRENT IN Y-BA-CU-O STEP-EDGE JOSEPHSON-JUNCTIONS, Czechoslovak journal of Physics, 46, 1996, pp. 1321-1322
Citations number
4
Categorie Soggetti
Physics
Journal title
Czechoslovak journal of Physics → ACNP
ISSN journal
00114626
Volume
46
Year of publication
1996
Supplement
3
Pages
1321 - 1322
Database
ISI
SICI code
0011-4626(1996)46:<1321:LMOTCI>2.0.ZU;2-C
Abstract
Transport properties of YBa2Cu3O7-x (YBCO) step-edge weak links were m easured in the absence and presence of the magnetic field B, both befo re and after the cw-laser annealing. Depending on the laser power dens ity, either an increase (up to 75%) or decrease (up to 100%) of the ju nction critical current I-C was observed. The I-C(B) characteristics o f the laser-treated junctions exhibited about 10% variations of the I- C(B) periodicity, indicating permanent changes in the junction barrier and/or adjacent YBCO electrodes.