The charge transfer investigation: X-ray photoelectron spectroscopy (XPS) on superconducting Tl2Ca2Ba2Cu3O10 thin film
| Autor: | W.G. Zeng, Guangyin Zhang, Zeng-Fa Li, S.L. Yan, Ping Qiou |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Superconductivity
Phase transition High-temperature superconductivity Chemistry Analytical chemistry General Chemistry Substrate (electronics) Condensed Matter Physics law.invention X-ray photoelectron spectroscopy Sputtering law Condensed Matter::Superconductivity Phase (matter) Materials Chemistry Thin film |
| Zdroj: | Solid State Communications. 84:493-496 |
| ISSN: | 0038-1098 |
| DOI: | 10.1016/0038-1098(92)90176-a |
| Popis: | The single-phase superconducting thin film Tl 2 Ca 2 Ba 2 Cu 3 O 10 were prepared by dc-magnetron sputtering process on YSZ substrate and its X-ray photoelectron spectra at room and liquid nitrogen temperature were measured, respectively. From the relative intensities of the Ba3d δ/2 , Tl4f, Ca2p, O1s and Cu2p spectra taken at different take-off angles, we have tentatively assigned which core-shifts should be responsible for the superconducting phase transition and observed that there exist charge transfer between Ba, Ca and O atoms during the superconducting phase transition after ascertaining the spurious phase on the surface of the film. This picture might be helpful for our understanding the mechanism of superconductivity. |
| Databáze: | OpenAIRE |
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