A surface structure model for Si(337)

The surface reconstruction on Si(337) at room temperature has been studied by low energy electron diffraction (LEED). It has been found that: (I) the Si(337) gave a clear LEED pattern which indicates the existence of another high index stable surface besides Si(113); (II) in addition to a strong Si(337)-(1 × 1), we observed for the first time a (2 × 1) LEED pattern indicating a surface reconstruction along the [110] direction; (III) a surface model has been proposed for the observed Si(337)-(2 × 1) structure.