Phys. Rev. Lett. 82, 3831–3834 (1999)Two ( 1×2) Reconstructions of TiO2(110): Surface Rearrangement and Reactivity Studied Using Elevated Temperature Scanning Tunneling MicroscopyReceived 2 November 1998; published in the issue dated 10 May 1999 We have employed elevated temperature scanning tunneling microscopy to elucidate the reactivity and surface structure of the (1×2) reconstructed TiO2(110) surface. We find two distinctly different ordered surface reconstructions depending upon the level of bulk reduction of the crystal (degree of nonstoichiometry). On the near stoichiometric surface reactivity to oxygen is low and attributed to the formation of the stable Ti2O3 type termination. For heavily reduced crystals a cross-linked (1×2) reconstruction forms with high activity to oxygen resulting in a well-defined cyclic reaction ( TiO2 growth). © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.3831
DOI:
10.1103/PhysRevLett.82.3831
PACS:
68.35.Bs, 82.65.Jv, 82.65.My
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