LEED-IV study of the rutile TiO{sub 2}(110)-1x2 surface with a Ti-interstitial added-row reconstruction
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Instituto de Ciencia de Materiales (CSIC), Cantoblanco, 28049 Madrid (Spain)
- Centro de Investigacion en Optica y Nanofisica, Universidad de Murcia, Campus Espinardo, 30100 Murcia (Spain)
- Centro de Astrobiologia (CSIC-INTA), Carretera de Ajalvir km. 4, 28850 Torrejon de Ardoz, Madrid (Spain)
Upon sputtering and annealing in UHV at {approx}1000 K, the rutile TiO{sub 2}(110) surface undergoes a 1x1{yields}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 Ti{sub 2}O 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 Ti{sub 2}O{sub 3} added row is the preferred one from the point of view low-energy electron diffraction.
- OSTI ID:
- 20976707
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 8 Vol. 75; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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