Superconductivity and localization in thin polycrystalline tungsten-germanium films
| Autor: | S.J.M. Bakker, T. M. Klapwijk, T. van der Drift, S. Radelaar, Heinrich M. Jaeger |
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| Přispěvatelé: | Applied Physics |
| Jazyk: | angličtina |
| Rok vydání: | 1993 |
| Předmět: |
Elastic scattering
Superconductivity Materials science Magnetoresistance Condensed matter physics ELECTRON-PHONON INTERACTION Scattering Transition temperature chemistry.chemical_element W-RE Germanium Weak localization Condensed Matter::Materials Science chemistry Condensed Matter::Superconductivity Critical field |
| Zdroj: | Physical Review B-Condensed Matter and Materials Physics, 48 (6) Physical Review. B: Condensed Matter and Materials Physics, 48(6), 4168-4171. AMER PHYSICAL SOC |
| ISSN: | 1550-235X 0163-1829 |
| Popis: | We report magnetoresistance measurements on a high-resistivity (almost-equal-to 200 muOMEGA cm) crystalline material that becomes superconducting. Our samples are thin polycrystalline W100-xGex (x=16-18) films, measured above the superconducting transition temperature. This is an opportunity to test the predictions for electron-phonon scattering in the presence of strong elastic scattering. The films are deposited using a low-temperature chemical-vapor-deposition process and show the crystalline beta-W structure (A15) with a T(c) of around 3 K and H(c2) near 8 T. Contributions from both superconducting fluctuations and weak localization to the magnetoresistance are discussed and the inelastic-scattering rate is found to be determined by electron-phonon scattering. |
| Databáze: | OpenAIRE |
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