Experimental Determination of the Quasiparticle Energy Distribution in a Nonequilibrium Superconductor

Experimental Determination of the Quasiparticle Energy Distribution in a Nonequilibrium Superconductor

We have observed sharp structure in the I-V characteristics of Al-AlO/sub x/-PbBi tunnel junctions induced by tunnel injection of excess quasiparticles into Al film. Interpretation of this structure provides information on the form of the steady-state quasiparticle energy distribution, showing that...

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Veröffentlicht in:Phys. Rev. Lett.; (United States) 1977-08, Vol.39 (5), p.291-295
Hauptverfasser: Kaplan, S. B., Kirtley, J. R., Langenberg, D. N.
Format: Artikel
Sprache:eng
Schlagworte:
360104 - Metals & Alloys- Physical Properties
ALLOYS
ALUMINIUM
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BISMUTH ALLOYS
CHALCOGENIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
ENERGY GAP
JOSEPHSON EFFECT
LEAD ALLOYS
MATERIALS SCIENCE
METALS
OXIDES
OXYGEN COMPOUNDS
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
SUPERCONDUCTING JUNCTIONS
TUNNEL EFFECT
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Zusammenfassung:We have observed sharp structure in the I-V characteristics of Al-AlO/sub x/-PbBi tunnel junctions induced by tunnel injection of excess quasiparticles into Al film. Interpretation of this structure provides information on the form of the steady-state quasiparticle energy distribution, showing that it is highly nonthermal. The data also demonstrate the presence of a branch imbalance in the injected Al film.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.39.291