Theory of the effect of supercurrents on the low-voltage resistance of superconductor–insulator–normal-metal tunnel junctions
Thomas R. Lemberger, Yeouchung Yen, Soon-Gul Lee
DOI 10.1103/PhysRevB.35.6670 · Physical Review B
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Abstract
The theory of charge imbalance in tunnel junctions is adapted to describe the low-voltage resistance Rj(T) of low-resistance superconductor–insulator–normal-metal (SIN) tunnel junctions. Rj is shown to be very sensitive to the pair-breaking effect of supercurrents. Numerical calculations for hypothetical SIN junctions illustrate how one can obtain information about the magnitude and temperature dependence of electron scattering rates, coherence factors, and the density of superconducting electrons from measurements of Rj in the presence of supercurrents either applied directly with a current supply or induced with a magnetic field applied parallel to the superconducting film. Such measurements should yield information similar to that obtained from other nonequilibrium techniques like NMR and ultrasonic attenuation.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sn Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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