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Título

LEED-IV study of the rutile TiO2(110)-1x2 surface with a Ti-interstitial added-row reconstruction

AutorBlanco-Rey, María; Abad, José; Rogero, Celia ; Méndez, Javier ; López, María Francisca ; Román García, Elisa Leonor ; Martín-Gago, José A. ; Andrés, Pedro L. de
Palabras claveTitanium compounds
Surface reconstruction
Surface phase transformations
Low energy electron diffraction
Interstitials
Scanning tunnelling microscopy
[PACS] Low-energy electron diffraction (LEED) and reflection high-energy electron diffraction (RHEED)
[PACS] Structure of clean solid surfaces (reconstruction)
[PACS] Oxide surfaces
Fecha de publicación9-feb-2007
EditorAmerican Physical Society
CitaciónPhysical Review B 75(8): 081402(R) (2007)
ResumenUpon sputtering and annealing in UHV at 1000 K the rutile TiO2(110) surface undergoes a 1x1 --> 1x2 phase transition. The resulting 1x2 surface is Ti rich, formed by strands of double Ti rows as seen on scanning tunneling microscopic images, but its detailed structure and composition have been subject to debate in the literature for years. Recently, Park et al. [Phys. Rev. Lett. 96 226105 (2006)] have proposed a model where Ti atoms are located on interstitial sites with Ti2O stoichiometry. This model, when it is analyzed using LEED-IV data [Phys. Rev. Lett. 96 0055502 (2006)] does not yield an agreement between theory and experiment as good as the previous best fit for Onishi and Iwasawa's model for the long-range 1x2 reconstruction. Therefore, the Ti2O3 added row is the preferred one from the point of view of low-energy electron diffraction.
Descripción4 pages, 2 figures, 1 table.-- PACS nrs.: 61.14.Hg; 68.35.Bs; 68.47.Gh.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevB.75.081402
URIhttp://hdl.handle.net/10261/2767
DOI10.1103/PhysRevB.75.081402
ISSN1098-0121
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