Dependence of critical current density on oxygen exposure in Nb-AlO/sub x/-Nb tunnel junctions
| Autor: | W. H. Mallison, Alan Willis Kleinsasser, R. E. Miller |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Superconductivity
Materials science Condensed matter physics Niobium Analytical chemistry chemistry.chemical_element Binary compound Partial pressure Condensed Matter Physics Oxygen Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Tunnel junction Aluminium oxide Physics::Chemical Physics Electrical and Electronic Engineering Current density |
| Zdroj: | IEEE Transactions on Appiled Superconductivity. 5:26-30 |
| ISSN: | 1051-8223 |
| DOI: | 10.1109/77.384565 |
| Popis: | We demonstrate that a large fraction of the available data relating the critical current density J/sub c/ of superconducting Nb-AlO/sub x/-Nb tunnel junctions to oxidation parameters can be accounted for by a single, nearly universal dependence. For fixed oxidation temperature, J/sub c/ does not depend independently on oxygen partial pressure and oxidation time, but only on their product. There are two distinct regimes in this dependence, corresponding to high and low J/sub c/. > |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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