Spectroscopy of short electron beam pulses by superconducting Nb/AlOx/Nb tunnel junctions
β Scribed by F. Hebrank; S. Lemke; F. Fominaya; R. Gross; R. P. Huebener
- Publisher
- Springer US
- Year
- 1993
- Tongue
- English
- Weight
- 341 KB
- Volume
- 93
- Category
- Article
- ISSN
- 0022-2291
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π SIMILAR VOLUMES
~urrent -voltage measurements on high conductance Nb/AIOx/AI/AIOx/Nb tunnel junction devices show a step In the sub-gap structure corresponding to the difference in the energy gaps V=2(!lNb-!lAI) of the two sup~.rcC?nduct~.rs. The measured !lAI is large. a~d'persists to temperature considerably in e
High quality Nb films with superconducting Tc'S of 9.3 K and residual resistance ratios of 3-5.5 have been fabricated by e-beam evaporation in an ordinary high vacuum system. Nb/Pb tunnel junctions of good quality (Vm ~ 13 mV,jc ~ 400 A cm -2) were prepared using an ion beam oxidation technique. The