Angular dependent soft x-ray absorption spectroscopy of vanadium oxides

We have used angle-dependent soft x-ray absorption spectroscopy to study the nature and orientation of the unoccupied states of V 2O 5, V 6O 13, VO 2, and V 2O 3. In the oxygen K edge (vanadium L III and L II) spectrum of V 6O 13 and V 2O 5, pre edge features are apparent; these vary dramatically wi...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 1994-02, Vol.194, p.1217-1218
Main Authors: Goering, E., Mu¨ller, O., denBoer, M.L., Horn, S.
Format: Article
Language:English
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Summary:We have used angle-dependent soft x-ray absorption spectroscopy to study the nature and orientation of the unoccupied states of V 2O 5, V 6O 13, VO 2, and V 2O 3. In the oxygen K edge (vanadium L III and L II) spectrum of V 6O 13 and V 2O 5, pre edge features are apparent; these vary dramatically with the angle between crystal axes and the polarization vector of the incident synchrotron radiation. The O K-edge (V L-edge) x-ray absorption spectra probe unoccupied states of O 2p (V 3d) symmetry, and the angular dependence thus reveals the spatial orientation and character of these hybridized O 2p - V 3d molecular orbitals in those highly anisotropic materials.
ISSN:0921-4526
DOI:10.1016/0921-4526(94)90938-5