Variations of the local electronic surface properties of TiO2(110) induced by intrinsic and extrinsic defects -: art. no. 235401

被引：69
|
作者：
Batzill, M
Katsiev, K
Gaspar, DJ
Diebold, U [1 ]
机构：
[1] Tulane Univ, Dept Phys, New Orleans, LA 70118 USA
[2] Pacific NW Natl Lab, Richland, WA 99352 USA
来源：
PHYSICAL REVIEW B | 2002年 / 66卷 / 23期
关键词：
D O I：
10.1103/PhysRevB.66.235401
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Variation of the local electronic structure at rutile TiO2(110) surfaces was studied by scanning tunneling spectroscopy (STS). Structural surface features such as step edges, (1x2) reconstructed strands, and their terminations were correlated to changes in tunneling spectra. In particular, band-gap states, associated with a reduced surface, showed characteristic variations. In addition, electronic variations due to extrinsic defects are discussed. Nanometer wide protrusions in constant current scanning tunneling microscopy images were identified in STS as local electronic alterations. These features are interpreted to be due to local band bending induced by individual, charged impurity atoms.
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页码：1 / 10
页数：10
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