Study of Nb-based Josephson tunnel junctions

Azusa Matsuda; Takahiro Inamura; Haruo Yoshikiyo

doi:10.1063/1.328250

Study of Nb-based Josephson tunnel junctions

Azusa Matsuda^*, Takahiro Inamura, Haruo Yoshikiyo

^*Corresponding author for this work

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

18 Citations (Scopus)

Abstract

Nb-based Josephson junctions are photographically fabricated with an improved lift-off method. Aging properties of Nb/Pb junctions are studied and the possible origin of aging was pointed out, using the shape dependence and I_J-H characteristics. The I-V characteristics of Nb/Pb junctions were analyzed quantitatively using a proximity effect model based on McMillan's tunneling model. Maximum Josephson current was calculated incorporating the strong coupling correction. Theory and experiment agreed well for both pair and quasiparticle density of states.

Original language	English
Pages (from-to)	4310-4316
Number of pages	7
Journal	Journal of Applied Physics
Volume	51
Issue number	8
DOIs	https://doi.org/10.1063/1.328250
Publication status	Published - 1980
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.328250

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abstract = "Nb-based Josephson junctions are photographically fabricated with an improved lift-off method. Aging properties of Nb/Pb junctions are studied and the possible origin of aging was pointed out, using the shape dependence and IJ-H characteristics. The I-V characteristics of Nb/Pb junctions were analyzed quantitatively using a proximity effect model based on McMillan's tunneling model. Maximum Josephson current was calculated incorporating the strong coupling correction. Theory and experiment agreed well for both pair and quasiparticle density of states.",

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AU - Yoshikiyo, Haruo

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AB - Nb-based Josephson junctions are photographically fabricated with an improved lift-off method. Aging properties of Nb/Pb junctions are studied and the possible origin of aging was pointed out, using the shape dependence and IJ-H characteristics. The I-V characteristics of Nb/Pb junctions were analyzed quantitatively using a proximity effect model based on McMillan's tunneling model. Maximum Josephson current was calculated incorporating the strong coupling correction. Theory and experiment agreed well for both pair and quasiparticle density of states.

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Study of Nb-based Josephson tunnel junctions

Abstract

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