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Site-specific valence-band X-ray photoelectron spectra of a SrTiO3 single-crystal by X-ray standing wave technique
- Source :
-
Solid State Communications . Nov2005, Vol. 136 Issue 7, p375-379. 5p. - Publication Year :
- 2005
-
Abstract
- Abstract: Site-specific valence-band X-ray photoelectron spectra of SrTiO3 (111) were successfully obtained by using X-ray standing wave technique. Contributions of the Ti and SrO3 derived states to the valence-band spectra were clearly separated. The spectra provided not only site-specific but also bulk-sensitive information on the SrTiO3 crystal because of the use of a high-energy synchrotron X-ray source (hν=4750eV) for photoelectron excitation with the large escape depth. The electronic structures calculated by the DV-Xα method using a (Sr8Ti27O108)92− cluster model well reproduced the observed structures in the valence-band spectra. The partial density of states of both Ti and Sr ions in SrTiO3 were mainly distributed over the bottom of the valence-band to produce the covalent bonding with O ions. [Copyright &y& Elsevier]
- Subjects :
- *STANDING waves
*SPECTRUM analysis
*PHOTOELECTRON spectroscopy
*IONS
Subjects
Details
- Language :
- English
- ISSN :
- 00381098
- Volume :
- 136
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Solid State Communications
- Publication Type :
- Academic Journal
- Accession number :
- 18994374
- Full Text :
- https://doi.org/10.1016/j.ssc.2005.09.013