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Valence band electronic structure characterization of the rutile TiO2 (110)-(1 × 2) reconstructed surface

AuthorsSánchez-Sánchez, Carlos ; Garnier, M. G.; Aebi, P.; Blanco-Rey, María; Andrés, Pedro L. de ; Martín-Gago, José A. ; López, María Francisca
KeywordsTitanium oxide
Electronic structure
Issue DateFeb-2013
CitationSurface Science 608: 92-96 (2013)
AbstractThe electronic structure of the TiO2 (110)-(1 × 2) surface has been studied by means of angular resolved ultraviolet photoemission spectroscopy (ARUPS). The valence band dispersion along the high symmetry surface directions, [001] and [1–10], has been recorded. The experimental data show no dispersion of the band-gap Ti 3d states. However, the existence of dispersive bands along the [001] direction located at about 7 eV below the Fermi level is reported. The existence of two different contributions in the emission from the defects-related state located in the gap of the surface is univocally shown for the first time.
Publisher version (URL)https://doi.org/10.1016/j.susc.2012.09.019
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