Charge imbalance observed in voltage-biased superconductor–normal tunnel junctions
R. Yagi
DOI 10.1103/PhysRevB.73.134507 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We have studied the tunneling current of a superconductor-insulator-normal tunnel junction connected to a nonequilibrium superconductor in which nonvanishing charge imbalance is present, by injection experiments using multiterminal devices fabricated with electron beam lithography. We found that the tunneling current could be separated into excess current, due to charge imbalance, and normal current, which showed clear and different dependences on the bias voltage, as expected from the theory of charge imbalance [M. Tinkham, Phys. Rev. B 6, 1747 (1972)]. We also found in the analysis of the normal current that nonequilibrium distributions were created in the normal electrode; they were presumably caused by excitation due to hot electrons that tunneled from the nonequilibrium superconductor.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.5 | Pressure unresolved | unknown |
Similar papers
Charge imbalance in superconductors in the low-temperature limit
similarity 0.96F. Hübler et al.
Source status unknown — claims are unverified
Resistance Anomaly and Excess Voltage near Superconducting Interfaces
similarity 0.93M. Park et al.
Source status unknown — claims are unverified
Resistance anomaly and excess voltage in inhomogeneous superconducting aluminum thin films
similarity 0.92M. Park et al.
Source status unknown — claims are unverified
Manipulation and Generation of Supercurrent in Out-of-Equilibrium Josephson Tunnel Nanojunctions
similarity 0.92S. Tirelli et al.
Source status unknown — claims are unverified
Number Fluctuations of Sparse Quasiparticles in a Superconductor
similarity 0.91P. J. de Visser et al.
Source status unknown — claims are unverified
Spin-valve effect of spin-accumulation resistance in a double ferromagnet/superconductor junction
similarity 0.91P. S. Luo et al.
Source status unknown — claims are unverified