Observation of large dc supercurrents at nonzero voltages in Josephson tunnel junctions
Abstract
Large dc supercurrents at nonzero voltages are observed in dc current-biased small Josephson tunnel junctions of the type PbIn- (PbIn)xOy-Pb with critical current densities j0 ranging from 2×102 to 2×105 A/cm2. The dependence of the hysteresis on j0 and the form of the subharmonic energy gap structure are compared with the theoretical results of McDonald et al.
- Publication:
-
Applied Physics Letters
- Pub Date:
- September 1976
- DOI:
- 10.1063/1.89094
- Bibcode:
- 1976ApPhL..29..380N
- Keywords:
-
- 74.35.+x;
- 73.40.Rw;
- Metal-insulator-metal structures