Nonequilibrium effects and subgap structure in superconducting contacts

Journal Article · Fri Jul 01 04:00:00 EDT 1983 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.28.161· OSTI ID:5692122

Peshkin, M A; Buhrman, R A

We calculate the current-voltage characteristics of a superconductor--normal-metal--superconductor junction, including the effects of multiple Andreev reflections and of a non %equilibrium quasiparticle distribution in the superconducting regions adjacent to the normal-superconductor interfaces. We find that only in ideal point contacts can nonequilibrium effects be neglected. Model calculations are performed in two limiting cases in which the nonequilibrium quasiparticle distributions are readily determined. The results are in good qualitative agreement with experimental observations of subgap structure.

• Research Organization: School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853
• OSTI ID: 5692122
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 28:1; ISSN PRBMD
• Country of Publication: United States
• Language: English

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71 CLASSICAL AND QUANTUM MECHANICS
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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DISTRIBUTION FUNCTIONS
ELECTRIC CONDUCTIVITY
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TUNNEL EFFECT