Defects at the TiO2(100) surface probed by resonant photoelectron diffraction

被引：9
作者：
Krueger, P.
Bourgeois, S.
Domenichini, B.
Magnan, H.
Chandesris, D.
Le Fevre, P.
Floreano, L.
Cossaro, A.
Verdini, A.
Morgante, A.
机构：
[1] Univ Bourgogne, CNRS, LRRS, F-21078 Dijon, France
[2] CEA Saclay, SPCSI, F-91191 Gif Sur Yvette, France
[3] Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France
[4] INFM, Lab Nazl TASC, Elettra Synchrotron Light Source, I-34012 Trieste, Italy
来源：
SURFACE SCIENCE | 2007年 / 601卷 / 18期
关键词：
titanium dioxide; surface defects; photoelectron diffraction; resonant photoemission;
D O I：
10.1016/j.susc.2007.04.033
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report photoelectron diffraction (PED) experiments of weakly sub-stoichiometric TiO2(100) rutile surfaces. Apart from standardcore-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. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：3952 / 3955
页数：4
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