Structure of the Reduced TiO2(110) Surface Determined by Scanning Tunneling Microscopy

The scanning tunneling microscope has been used to image a reduced TiO(2)(110) surface in ultrahigh vacuum. Structural units with periodicities rangng from 21 to 3.4 angstroms have been clearly imaged, demonstrating that atomic resolution imaging of an ionic, wide band gap (3.2 electron volts) semic...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1990-11, Vol.250 (4985), p.1239-1241
Main Authors: Rohrer, G S, Henrich, V E, Bonnell, D A
Format: Article
Language:English
Subjects:
Crystals
Scanning tunneling microscopy
Surface science
Surfaces (Physics)
Titanium dioxide
Titanium dioxide crystals
Online Access:Get full text
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Summary:The scanning tunneling microscope has been used to image a reduced TiO(2)(110) surface in ultrahigh vacuum. Structural units with periodicities rangng from 21 to 3.4 angstroms have been clearly imaged, demonstrating that atomic resolution imaging of an ionic, wide band gap (3.2 electron volts) semiconductor is possible. The observed surface structures can be explained by a model involving ordered arrangements of two-dimensional defects known as crystallographic shear planes and indicate that the topography of nonstoichiometric oxide surfaces can be complex.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.250.4985.1239