title: Signature of surface periodicity in the electronic structure of Si(1 1 1)-(7 × 7).
abstract: The surface electronic structure of Si(1 1 1)-[Formula: see text] has been studied by angle-resolved photo electron spectroscopy. Replicas of the S1surface state are found in correspondence with several [Formula: see text] unit cells in the reciprocal space. This observation resolves in a direct way the long-standing dichotomy between the structural and electronic properties of the system previously discussed on the basis of the [Formula: see text] or [Formula: see text] R30° surface models.
authors.affiliation: CNR-ISM, Istituto di Struttura della Materia, S.S. 14, km 163.5, I-34149 Trieste, Italy.
authors.forename: P M
authors.initials: PM
authors.lastname: Sheverdyaeva
authors.forename: S K
authors.initials: SK
authors.lastname: Mahatha
authors.forename: F
authors.initials: F
authors.lastname: Ronci
authors.forename: S
authors.initials: S
authors.lastname: Colonna
authors.forename: P
authors.initials: P
authors.lastname: Moras
authors.forename: M
authors.initials: M
authors.lastname: Satta
authors.forename: R
authors.initials: R
authors.lastname: Flammini