Overdamped Nb/Al-AlO{sub x}/Nb Josephson junctions
- Thin Films Department, IEN 'G. Ferraris', Strada delle Cacce 91, I-10135, Torino (Italy)
We report the fabrication and characterization of overdamped Nb/Al-AlO{sub x}/Nb superconductor-insulator-superconductor Josephson junction whose fabrication process derives from that of the well-known hysteretic junctions. These junctions are an intermediate state between the superconductor-normal metal-superconductor and the superconductor-insulator-superconductor Josephson junctions. Stable and reproducible nonhysteretic current-voltage characteristics are obtained with a proper choice of the fabrication parameters. We have measured critical current densities J{sub C} from 10{sup 3} up to 2x10{sup 4} A/cm{sup 2}, with characteristic voltages from 80 to nearly 450 {mu}V. The junctions are stable against time and repeated thermal cycling.
- OSTI ID:
- 20636969
- Journal Information:
- Applied Physics Letters, Vol. 86, Issue 4; Other Information: DOI: 10.1063/1.1856135; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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