Mechanisms of critical current limitation in YBCO thin film structures
作者:
Sˇ. Benˇacˇka,
V. Sˇtrbik,
Sˇ. Chromik,
R. Adam,
M. Darula,
Sˇ. Gazˇi,
期刊:
Low Temperature Physics
(AIP Available online 1998)
卷期:
Volume 24,
issue 7
页码: 468-470
ISSN:1063-777X
年代: 1998
DOI:10.1063/1.593624
出版商: AIP
数据来源: AIP
摘要:
The limitation of critical current in highTcsuperconducting YBCO thin films has a varied nature according to the quality of YBCO films. Our results showed that in strips from granular films the weak links of superconductor–normal metal–superconductor and superconductor–constriction–superconductor types were responsible for critical current limitation. In the YBCO strips with improved (preferential) crystallographic orientation a flux-creep critical current limitation was found and in the highly oriented YBCO strips the Ginzburg–Landau depairing mechanism approximated the critical current limitation for temperature close toTc.©1998 American Institute of Physics.
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