Self-field effects in superconductor-normal metal-superconductor junctions

Shoichi Nagata; H. C. Yang; D. K. Finnemore

doi:10.1063/1.331417

Self-field effects in superconductor-normal metal-superconductor junctions

Shoichi Nagata^*
, H. C. Yang
, D. K. Finnemore

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The temperature dependence of the dc Josephson critical supercurrent has been measured for square lead-zinc-lead (superconductor-normal metal-superconductor) junctions in order to make a quantitative study of self-field effects. Correction for the critical current density, J_c, due to the self-field effect is made by using the linearized two-dimensional model proposed by Vaglio. We calculate the temperature dependence of the Josephson penetration depth, λ_J and find J_c to be proportional to (1-T/T_c)² in the range where λ_J is comparable to the junction width, W.

Original language	English
Pages (from-to)	5798-5801
Number of pages	4
Journal	Journal of Applied Physics
Volume	53
Issue number	8
DOIs	https://doi.org/10.1063/1.331417
Publication status	Published - 1982
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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AU - Yang, H. C.

AU - Finnemore, D. K.

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N2 - The temperature dependence of the dc Josephson critical supercurrent has been measured for square lead-zinc-lead (superconductor-normal metal-superconductor) junctions in order to make a quantitative study of self-field effects. Correction for the critical current density, Jc, due to the self-field effect is made by using the linearized two-dimensional model proposed by Vaglio. We calculate the temperature dependence of the Josephson penetration depth, λJ and find Jc to be proportional to (1-T/Tc)2 in the range where λJ is comparable to the junction width, W.

AB - The temperature dependence of the dc Josephson critical supercurrent has been measured for square lead-zinc-lead (superconductor-normal metal-superconductor) junctions in order to make a quantitative study of self-field effects. Correction for the critical current density, Jc, due to the self-field effect is made by using the linearized two-dimensional model proposed by Vaglio. We calculate the temperature dependence of the Josephson penetration depth, λJ and find Jc to be proportional to (1-T/Tc)2 in the range where λJ is comparable to the junction width, W.

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JF - Journal of Applied Physics

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Self-field effects in superconductor-normal metal-superconductor junctions

Abstract

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