|
|||||
|
|
Defects at the TiO2(1 0 0) surface probed by resonant photoelectron diffraction |
|
| Authors: | P Krüger S Bourgeois H Magnan P Le Fèvre A Cossaro A Morgante |
| Institution: | a LRRS, CNRS-Université de Bourgogne, BP 47870, 21078 Dijon Cedex, France b SPCSI, CEA Saclay, 91191 Gif Sur Yvette Cedex, France c Synchrotron SOLEIL, L’Orme des Merisiers, BP 48, 91192 Gif Sur Yvette, France d Laboratorio Nazionale TASC-INFM, Elettra Synchrotron Light Source, 34012 Basovizza-Trieste, Italy |
| Abstract: | We report photoelectron diffraction (PED) experiments of weakly sub-stoichiometric TiO2(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. |
| Keywords: | Titanium dioxide Surface defects Photoelectron diffraction Resonant photoemission |
| 本文献已被 ScienceDirect 等数据库收录！ | |