Sub-micron thin film intrinsic Josephson junctions
| Autor: | AR Kuzhakhmetov, Paul A. Warburton, Chris R. M. Grovenor, Gavin Burnell, Christopher Bell, Mark G. Blamire, Houzheng Wu, H Schneidewind |
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| Rok vydání: | 2003 |
| Předmět: |
Josephson effect
Superconductivity Fabrication High-temperature superconductivity Materials science Condensed matter physics Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention Hysteresis Nanolithography law Condensed Matter::Superconductivity Electrical and Electronic Engineering Thin film Vicinal |
| Zdroj: | IEEE Transactions on Appiled Superconductivity. 13:821-824 |
| ISSN: | 1051-8223 |
| DOI: | 10.1109/tasc.2003.814056 |
| Popis: | We have fabricated sub-micron intrinsic Josephson junctions in thin films of Tl-Ba-Ca-Cu-O using two differing techniques suited to different applications. By using lateral focussed ion-beam milling we have created arrays of intrinsic junctions in c-axis oriented films. Such arrays, with areas as low as 0.25 /spl mu/m/sup 2/, display large hysteresis comparable to that observed in single-crystal intrinsic junctions. By using normal focussed ion-beam milling we have created arrays in mis-aligned films grown on vicinal substrates. In arrays of area less than 0.4 /spl mu/m/sup 2/ we observe Josephson phase diffusion and a suppressed critical current, showing that charging effects may be significant in these junctions. |
| Databáze: | OpenAIRE |
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