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Article Dans Une Revue Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces Année : 2007

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

Résumé

Molybdenum was deposited in two steps (3 eq. ML and 1 eq. ML) on the light blue rutile TiO2(110) (1 · 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/dV curves do not display the valence band structure of deposited material, which could be explained by the Schottky barrier formation.

Dates et versions

hal-00475629 , version 1 (22-04-2010)

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M. Petukhov, G.A. Rizzi, B. Domenichini, G. Granozzi, S. Bourgeois. Scanning tunneling microscopy and spectroscopy of Mo clusters grown on TiO2(110).. Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces, 2007, 601, pp.3881-3885. ⟨10.1016/j.susc.2007.04.032⟩. ⟨hal-00475629⟩
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