Abstract
Using an electron monochromator attached to an electron microscope, high energy-resolution electron energy-loss spectra collected from TeO2 have revealed new features in the Oxygen K-edge. Using density-functional theory in the local density and the generalized gradient approximation, we find that core-hole strength of 1.3 gives an excellent fit to our high-resolution experimental data. This indicates that screening is not weak in this oxide, as normally assumed, and that neither the ground state nor a full core-hole model is adequate in quantitative reproduction of the O K-edge in the TeO2 system.
Original language | English (US) |
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Pages (from-to) | 123-129 |
Number of pages | 7 |
Journal | Ultramicroscopy |
Volume | 106 |
Issue number | 2 |
DOIs | |
State | Published - Jan 2006 |
Keywords
- Electron energy loss spectroscopy
- TeO
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Instrumentation