title: Structure determination of Bi/Ge(111)-[Formula: see text] by dynamical low-energy electron diffraction analysis and scanning tunneling microscopy.
abstract: We have determined the atomic structure of the Bi/Ge(111)-[Formula: see text] surface by dynamical low-energy electron diffraction (LEED) analysis and scanning tunneling microscopy (STM). The optimized atomic structure consists of Bi atoms which are adsorbed near the T(1) sites of the bulk-truncated Ge(111) surface and form triangular trimer units centered at the T(4) sites. The atomically resolved STM image was consistent with the LEED result. The structural parameters agree well with those optimized by a first-principles calculation which supports the interpretation of the electronic band splitting on this surface in terms of the giant Rashba effect.
authors.affiliation: Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan. JST CREST, Saitama 332-0012, Japan.
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Ohtsubo
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Hatta
authors.forename: Manabu
authors.initials: M
authors.lastname: Iwata
authors.forename: Koichiro
authors.initials: K
authors.lastname: Yaji
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Okuyama
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Aruga