Magnetoresistance probe of spatial current variations in high‐TcYBa2Cu3O7–SrRuO3–YBa2Cu3O7Josephson junctions
作者:
S. C. Gausepohl,
Mark Lee,
L. Antognazza,
K. Char,
期刊:
Applied Physics Letters
(AIP Available online 1995)
卷期:
Volume 67,
issue 9
页码: 1313-1315
ISSN:0003-6951
年代: 1995
DOI:10.1063/1.114524
出版商: AIP
数据来源: AIP
摘要:
The low frequency current–voltage characteristics of YBa2Cu3O7–SrRuO3–YBa2Cu3O7Josephson junctions show an increasing resistance and phase shift in fields of 0 to 8 T. A critical current is also evident up to 8 T. Data are analyzed in terms of field‐induced perturbations of the current paths through the junction. Results indicate a highly inhomogeneous interface where the mean width of spatial variations in both normal and supercurrent is of order 50 to 100 A˚. ©1995 American Institute of Physics.
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