Abstract
Scanning tunneling microscopy and density functional theory are used to develop a new structural model for surface reconstructions driven by Ti interstitials on . Ti interstitials form the edge- or face-sharing octahedra that serve as building blocks for reconstruction. Thus, contrary to conventional wisdom, the periodicity is insufficient to establish the correct surface stoichiometry. Furthermore, in our structural and compositional model the reversible oxidation or reduction between and is entirely achieved by transfer of the added rows.
- Received 9 March 2006
DOI:https://doi.org/10.1103/PhysRevLett.96.226105
©2006 American Physical Society