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Scanning tunneling microscopy and spectroscopy of Mo clusters grown on TiO2(110) (Articolo in rivista)

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Scanning tunneling microscopy and spectroscopy of Mo clusters grown on TiO2(110) (Articolo in rivista) (literal)

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Petukhov, M; Rizzi, GA; Domenichini, B; Granozzi, G; Bourgeois, S (2007)
Scanning tunneling microscopy and spectroscopy of Mo clusters grown on TiO2(110)
in Surface science
(literal)

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Russian Res Ctr, Kurchatov Inst, IGNP, Moscow 123182, Russia; Univ Bourgogne, CNRS, UMR 5613, Lab Rech React Solides, F-21078 Dijon, France; Univ Padua, Dipartimento Sci Chim, I-35131 Padua, Italy; Univ Padua, INFM, CNR, Res Unit, I-35131 Padua, Italy (literal)

Titolo

Scanning tunneling microscopy and spectroscopy of Mo clusters grown on TiO2(110) (literal)

Abstract

Molybdenum was deposited in two steps (3 eq. ML and 1 eq. ML) on the light blue rutile TiO2 10) (1 x 1) surface at room temperature, each Mo deposition cycle being followed by an annealing up to 950-1000 K. This procedure was found to lead to formation of separated clusters having a size in very wide range (1-20 nm). Scanning tunneling microscopy showed a dependence of the cluster morphology as a function of the size. The scanning tunneling spectra of Mo clusters was studied as a function of cluster dimensions and discussed in comparison with photoelectron spectroscopy results previously obtained for homogeneous Mo films. The dI/d V curves do not display the valence band structure of deposited material, which could be explained by the Schottky barrier formation. (C) 2007 Elsevier B.V. All rights reserved. (literal)

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