TUNNELING DENSITY OF STATES FOR A SUPERCONDUCTOR CARRYING A CURRENT,
Abstract
A current flowing in a superconducting film has a tendency to break pairs similar to the effect of paramagnetic impurities in a superconductor. The effect ofthe current on the tunneling density of states for a normal-superconductor tunneling junction has been computed by the Green's func tion method of Abrikosov, Gorkov and Maki (Abrikosov and Gorkov, J. Exper. Theoret. Phys. (U.S.S.R.) 39:1781 (1960), translated in Soviet Phys. - J.E.T.P. 12: 1243 (1961) and Maki (Prog. theoret. Phys. 29:10 (1963) and 29:333 (1963) and found to be identical (for a short mean free path) to that of paramagnetic impurities. A simple relationship between the current parallel to the junction and the equivalent paramagnetic impurity concentration is derived. Passing various amounts of current through the sample in the one experiment gives the same information as is obtainable in the other experiment only by preparing different samples with various impurity concentrations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1964
- Accession Number
- AD0610500
Entities
People
- Peter Fulde
Organizations
- University of Maryland