Quasiparticle trapping from a single-crystal superconductor into a normal-metal film via the proximity effect

Journal Article · Sun Feb 18 23:00:00 EST 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.954· OSTI ID:6961992

Goldie, D J; Booth, N E; Patel, C; Salmon, G L ^[1]

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1. Department of Physics, University of Oxford, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH, United Kingdom (GB)

We have studied the dynamics of the nonequilibrium state produced in single-crystal superconducting indium by pulsed laser irradiation using tunnel junctions. By a suitable choice of a thin metal film in intimate contact with the indium crystal, we have been able to produce a pronounced change in the time evolution of the excess quasiparticle density which indicates that the quasiparticles are trapped in the film. This effect can take place both when the film is another superconductor of lower energy gap or is a normal metal made superconducting by the proximity effect.

• OSTI ID: 6961992
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 64:8; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM
CHALCOGENIDES
COPPER
CRYSTALS
ELECTROMAGNETIC RADIATION
ELEMENTS
FILMS
INDIUM
IRREVERSIBLE PROCESSES
JOSEPHSON JUNCTIONS
JUNCTIONS
LASER RADIATION
LEAD
METALS
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
PROXIMITY EFFECT
PULSES
QUASI PARTICLES
RADIATIONS
SILICON COMPOUNDS
SILICON OXIDES
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THIN FILMS
TIME DEPENDENCE
TRANSITION ELEMENTS
TRAPPING
TUNNEL EFFECT
ULTRALOW TEMPERATURE