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Title: Theory of the low-voltage impedance of superconductor-- p insulator--normal metal tunnel junctions

Journal Article · · Phys. Rev. Lett.; (United States)

A theory for the low-voltage impedance of a superconductor-- p insulator--normal metal tunnel junction is developed that includes the effects of charge imbalance and of quasiparticle fluctuations. A novel, inelastic, charge-imbalance relaxation process is identified that is associated with the junction itself. This new process leads to the surprising result that the charge-imbalance component of the dc resistance of a junction becomes independent of the electron-phonon scattering rate as the insulator resistance decreases.

Research Organization:
Physics Department, Ohio State University, Columbus, Ohio 43210
OSTI ID:
6898199
Journal Information:
Phys. Rev. Lett.; (United States), Vol. 52:12
Country of Publication:
United States
Language:
English