The Cu oxidation number in YBa2Cu3O7 has been measured directly by soft X-ray fluorescent spectroscopy both at room temperature and at liquid N2 temperature. The measurements are based on a calibration curve from different Ba-O compounds. The effect of changes in oxidation number above and below the transition temperature and its role in high Tc superconductivity are discussed.
- Cu oxidation number
- Cuprate superconductors
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Physics and Astronomy (miscellaneous)