Theoretical and Experimental Study of Resonant 3d X-Ray Photoemission and Resonant L 3M 45M 45 Auger Transition of PdO
Abstract
The observed 3d X-ray photoemission spectra (XPS),resonant 3dXPS (RXPS) at the L3 edgeand resonant L3M45M45 Auger electron spectra (RAES) of4d transition metal oxide PdO are successfully analyzed by means of an impurity Anderson model.The importance of Pd 4d- O 2p hybridization effect is especiallyemphasized in the interpretation of observed spectra.It causes charge transfer satellites in 3dXPS and L3M45M45RAESand mainly determines the structure of resonance enhancements in 3dRXPS.From the analysis of spectra, 4d-2p charge transfer energy Δ, 4d correlation energy Udd and 4d-2p transfer integral pdσare estimated to be 5.5 eV, 4.5 eV and 2.1 eV, respectively.The character of the insulating energy gap of PdO is also theoretically investigated: PdO is classified as an intermediate-type insulator due to the strong 4d-2phybridization.
- Publication:
-
Journal of the Physical Society of Japan
- Pub Date:
- April 2000
- DOI:
- 10.1143/JPSJ.69.1226
- Bibcode:
- 2000JPSJ...69.1226U