The influence of magnetic field on microwave surface resistance of two-layer YBa2Cu3O7-x films
| Autor: | S. F. Karmanenko, V. L. Klimenko, O.G. Vendik, O.I. Soldatenkov, K.F. Njakshev, A.B. Kozyrev |
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| Rok vydání: | 1992 |
| Předmět: |
Superconductivity
Reflection high-energy electron diffraction Condensed matter physics business.industry Chemistry General Chemistry Granular layer Condensed Matter Physics Magnetic flux Condensed Matter::Materials Science Optics Electron diffraction Condensed Matter::Superconductivity Cavity magnetron Materials Chemistry Surface layer business Sheet resistance |
| Zdroj: | Solid State Communications. 84:327-332 |
| ISSN: | 0038-1098 |
| DOI: | 10.1016/0038-1098(92)90131-r |
| Popis: | Using Reflection High Energy Electron Diffraction (RHEED) Analysis and Electron Microscopy of YBa2Cu3O7-x films prepared by d.c.-magnetron sputtering, it has been shown that the films consist of high-oriented and granular layers. The non-monotonous dependence of microwave surface resistance on film thickness confirmed the presence of two layers with different kind of structure into the film with thickness more than 300–400 nm. The influence of frozen magnetic flux on microwave surface resistance of high-oriented and two-layers films has been investigated. For a description of microwave response in magnetic field a two-layer model of oxide superconductor film on the basis of classical two-fluid model and the model of granular medium with Josephson intergrain contacts has been proposed. The influence of the granular layer parameters on microwave surface resistance of two-layer films has been determined. |
| Databáze: | OpenAIRE |
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