Basic Josephson tunnel parameters at microwave frequency—A reassessment
作者:
M. J. Feldman,
S. Rudner,
T. Claeson,
期刊:
Journal of Applied Physics
(AIP Available online 1980)
卷期:
Volume 51,
issue 9
页码: 5058-5060
ISSN:0021-8979
年代: 1980
DOI:10.1063/1.328357
出版商: AIP
数据来源: AIP
摘要:
A previously published analysis of the magnetic field variation of the reflected microwave power from small unbiased Pb‐O‐Pb Josephson junctions found strong temperature dependences for the basic tunnel parameters. We reanalyze those measurements employing independent variables, compensating for spurious external reflections, and accounting for noise reduction of the dc critical current. The cos&fgr; amplitude &zgr; is positive nearTcand becomes negative at lower temperatures. In contrast to the previous work &zgr; is less sharply peaked, the junction rf resistance varies smoothly, and the capacitance is temperature independent. Our results clearly disagree with recent theoretical work.
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