Valence band electronic structure of V2O5 as determined by resonant soft X-ray emission spectroscopy
| Autor: | Wolfgang Grünert, Thomas Strunskus, O. Yu. Khyzhun, Ch. Wöll |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Radiation
Photon Chemistry Electronic structure Condensed Matter Physics Atomic and Molecular Physics and Optics Spectral line XANES Electronic Optical and Magnetic Materials Pentoxide Physical and Theoretical Chemistry Atomic physics Soft X-ray emission spectroscopy Absorption (electromagnetic radiation) Spectroscopy Excitation |
| Zdroj: | Journal of Electron Spectroscopy and Related Phenomena. 149:45-50 |
| ISSN: | 0368-2048 |
| DOI: | 10.1016/j.elspec.2005.07.002 |
| Popis: | Resonant soft X-ray emission (SXE) spectra have been measured for a series of excitation energies at the V Lα and O Kα bands of divanadium pentoxide, V2O5. In addition, a near-edge X-ray absorption fine structure (NEXAFS) spectrum at the V 2p and O 1s edges has been also recorded to aid the assignment of the features seen in the SXE data. The V Lα SXE spectrum of V2O5 consists of two distinct components that can be assigned to the V 3deg-like states strongly hybridized with the O 2pσ-like states and to the V 3dt2g-like states weakly hybridized with the O 2pπ-like states. The resonant SXE spectra recorded at photon energies close to the position of the V LIII edge revealed Raman-like features with an energy loss of 7 eV similar to charge transfer states previously observed by Schmitt et al. [T. Schmitt, L.-C. Duda, M. Matsubara, M. Mattesini, M. Klemm, A. Augustsson, J.-H. Guo, T. Uozumi, S. Horn, R. Ahuja, A. Kotani, J. Nordgren, Phys. Rev. B 69 (2004) 125103] for the V6O13 oxide. |
| Databáze: | OpenAIRE |
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