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Identification of metal s states in Sn-doped anatase by polarisation dependent hard X-ray photoelectron spectroscopy

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Agrestini,  S.
Stefano Agrestini, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Utsumi,  Y.
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Regoutz, A., Oropeza, F. E., Poll, C. G., Payne, D. J., Palgrave, R. G., Panaccione, G., et al. (2016). Identification of metal s states in Sn-doped anatase by polarisation dependent hard X-ray photoelectron spectroscopy. Chemical Physics Letters, 647, 59-63. doi:10.1016/j.cplett.2016.01.013.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002A-309F-B
Abstract
The contributions of Sn 5s and Ti 4s states to the valence band electronic structure of Sn-doped anatase have been identified by hard X-ray photoelectron spectroscopy. The metal s state intensity is strongly enhanced relative to that of O 2p states at high photon energies due to matrix element effects when electrons are detected parallel to the direction of the polarisation vector of the synchrotron beam, but becomes negligible in the perpendicular direction. The experimental spectra in both polarisations are in good agreement with cross section and asymmetry parameter weighted partial densities of states derived from density functional theory calculations. (C) 2016 Elsevier B.V. All rights reserved.