Abstract
We report the first scanning tunneling microscopy (STM) study of single-crystalline anatase. Atomically resolved images of the (101) surface are consistent with a bulk-truncated $(1\ifmmode\times\else\texttimes\fi{}1)$ termination. Step edges run predominantly in the [010], $[1\ifmmode\bar\else\textasciimacron\fi{}11],$ and $[1\ifmmode\bar\else\textasciimacron\fi{}1\ifmmode\bar\else\textasciimacron\fi{}1]$ directions. The surface is stable with very few point defects. Fourfold-coordinated Ti atoms at step edges are preferred adsorption sites and allow the identification of tunneling sites in STM.
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