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Superconducting transition behavior of TmBa<sub>3</sub>Cu<sub>3</sub>O<sub>7-δ</sub> and TmBaSrCu<sub>3</sub>O<sub>7-δ</sub> thin films
- Autor(en)
- P. Gehringer, W. Lang, E. Stangl, S. Proyer
- Abstrakt
We report an investigation of the superconducting transitions of TmBa/sub 2/Cu/sub 3/O/sub 7- delta / and TmBaSrCu/sub 3/O/sub 7- delta / thin films. A complementary analysis of the resistive broadening around the critical temperature T/sub c/ in high magnetic fields up to 13 T and of the fluctuation-induced magnetoresistance in the Gaussian fluctuation regime considerably above T/sub c/ revealed a unique set of parameters. In that way we obtained the zero-temperature in-plane, xi /sub ab/(0), and out-of-plane, xi /sub o/(0), coherence lengths and the specific heat jump Delta C at T/sub c/. Despite a significantly different T/sub c/ and normal-state properties, the fundamental superconducting parameters are very similar in TmBa/sub 2/Cu/sub 3/O/sub 7- delta / and TmBaSrCu/sub 3/O/sub 7- delta /.
- Organisation(en)
- Elektronische Materialeigenschaften
- Externe Organisation(en)
- Universität Wien
- Journal
- Superlattices and Microstructures
- Band
- 21
- Seiten
- 311-315
- Anzahl der Seiten
- 5
- ISSN
- 0749-6036
- Publikationsdatum
- 1997
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103018 Materialphysik
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/ab38a0ca-466d-4a55-abff-bd5d0bffd04d