Electrical characterization of Nb/Al-oxide/Nb Josephson junctions with high critical current densities
| Autor: | R.E. Miller, W.H. Mallison, Alan Willis Kleinsasser, Gerald B. Arnold |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Josephson effect
Materials science Condensed matter physics Niobium Oxide chemistry.chemical_element Condensed Matter Physics Electronic Optical and Magnetic Materials Pi Josephson junction chemistry.chemical_compound chemistry Quasiparticle Superconducting tunnel junction Electrical and Electronic Engineering Current (fluid) Quantum tunnelling |
| Zdroj: | IEEE Transactions on Appiled Superconductivity. 5:2735-2738 |
| ISSN: | 1051-8223 |
| DOI: | 10.1109/77.403156 |
| Popis: | Transport in Nb/AlO/sub x//Nb junctions involves two parallel channels, barrier defects (pinholes) with sub-nanometer dimensions and nearly-ideal tunneling regions. We fit junction characteristics using only a single parameter, the ratio of the normal state conductances of these current paths. Our barrier model accounts for the excellent Josephson behavior and highly non-ideal quasiparticle characteristics of junctions with critical current densities as high as 4 mA//spl mu/m/sup 2/. It appears to be quite generally applicable to tunnel junctions. > |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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