title: Interpretation of Oxygen K pre-edge peak in complex oxides.
abstract: A controversial pre-edge peak has often been observed at the O K-edge in absorption spectra from complex oxides. We study this feature in both K(2)O-SiO(2) glass and MgAl(2)O(4) spinel crystals. Our time-resolved energy-loss spectroscopy (EELS) results indicate that the pre-edge peak is due to radiation damage, rather than from any intrinsic feature of the material. It is assigned to the pi* peak due to the O-O interaction.
authors.affiliation: Department of Physics and Astronomy, Arizona State University, Tempe AZ 85287-1504, USA. nan.jiang@asu.edu
authors.forename: Nan
authors.initials: N
authors.lastname: Jiang
authors.forename: John C H
authors.initials: JC
authors.lastname: Spence