Defects at the TiO 2(1 0 0) surface probed by resonant photoelectron diffraction

P Krüger,S Bourgeois,B Domenichini,H Magnan,D Chandesris,P Le Fèvre,L Floreano,A Cossaro,A Verdini,A Morgante

doi:10.1016/j.susc.2007.04.033

Defects at the TiO 2(1 0 0) surface probed by resonant photoelectron diffraction

P Krüger, S Bourgeois + Show 8 more

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https://doi.org/10.1016/j.susc.2007.04.033

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Journal: Surface Science	Publication Date: Apr 16, 2007
Citations: 10

Affiliation: University of Burgundy, French National Centre for Scientific Research, CEA Saclay, Atomic Energy and Alternative Energies Commission, Soleil Synchrotron, Elettra-Sincrotrone Trieste S.C.p.A.

#Photoelectron Diffraction #Photoelectron Diffraction Patterns + Show 8 more

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Abstract

We report photoelectron diffraction (PED) experiments of weakly sub-stoichiometric TiO 2(1 0 0) rutile surfaces. Apart from standard core-level PED from the Ti-2p3/2 line, we have studied valence band PED from the defect induced Ti-3d states in the insulating band gap. For maximum yield, the latter were resonantly excited at the Ti-2p absorption edge. The PED patterns have been analyzed within the forward scattering approximation as well as by comparison with simulated PED patterns obtained in multiple scattering calculations. The analysis shows that the defect induced Ti-3d charge is mainly located on the second layer Ti atoms.

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