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http://dspace.mediu.edu.my:8181/xmlui/handle/10261/2767| Title: | LEED-IV study of the rutile TiO2(110)-1x2 surface with a Ti-interstitial added-row reconstruction |
| Authors: | Comisión Interministerial de Ciencia y Tecnología, CICYT (España) Consejo Superior de Investigaciones Científicas (España) |
| Keywords: | Titanium 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 |
| Publisher: | American Physical Society |
| Description: | 4 pages, 2 figures, 1 table.-- PACS nrs.: 61.14.Hg; 68.35.Bs; 68.47.Gh. Upon 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. This work has been financed by the CYCIT (Grant No. MAT-2005-3866). M.B.R. acknowledges Spanish CSIC for financial support through I3P program. The Barcelona Supercomputer Center (http://www.bsc.es/) is acknowledged for computing time. Peer reviewed |
| URI: | http://dspace.mediu.edu.my:8181/xmlui/handle/10261/2767 |
| Other Identifiers: | Physical Review B 75(8): 081402(R) (2007) 1098-0121 http://hdl.handle.net/10261/2767 10.1103/PhysRevB.75.081402 |
| Appears in Collections: | Digital Csic |
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