ATOM-RESOLVED STRUCTURES OF TiO2(001) SURFACE BY SCANNING TUNNELING MICROSCOPY

Surface structures of a TiO2(001) surface are examined in atomic scale by STM. Among two ordered phases which depend on annealing temperature as reported from an LEED study, an atomic-scale image of the higher temperature phase, which shows unique surface reactivity, was visualized. The surface cons...

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Bibliographic Details
Published in:Jpn.J.Appl.Phys ,Part 1. Vol. 40, no. 6B, pp. 4331-4333. 2001 Part 1. Vol. 40, no. 6B, pp. 4331-4333. 2001, 2001, Vol.40 (6B), p.4331-4333
Main Authors: Fukui, K, Tero, R, Iwasawa, Y
Format: Article
Language:English
Online Access:Get full text
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Summary:Surface structures of a TiO2(001) surface are examined in atomic scale by STM. Among two ordered phases which depend on annealing temperature as reported from an LEED study, an atomic-scale image of the higher temperature phase, which shows unique surface reactivity, was visualized. The surface consisted of crossed rows along the [1-10] direction and the [-110] direction. Each row had a bleacher-like structure which formed stairs at both sides with an average slope identical to the {114} face. An atom-resolved STM image showed that each narrow terrace of the stairs is covered with a unit of three bright spots which are ordered in line perpendicular to the step and arranged with a constant separation of 0.65 nm. The STM image is not consistent with the previously proposed {114}-faceted model. 15 refs.
ISSN:0021-4922
DOI:10.1143/JJAP.40.4331