title: Coexistence of rocksalt and wurtzite structure in nanosized CoO films.
abstract: Cobalt oxide (CoO) films epitaxially grown on Ir(100) in (111) orientation were investigated by means of quantitative low-energy electron diffraction and scanning tunneling microscopy. We find with high crystallographic precision that in the bulk of the films the rocksalt structure prevails while near the surface there is a switch towards the wurtzite structure. As a consequence, nanosized CoO cannot be considered as a single structural phase. The film surfaces prove to be metallic, apparently connected with polarity compensation.
authors.affiliation: Lehrstuhl für Festkörperphysik, Universität Erlangen-Nürnberg, Staudtstr. 7, D-91058 Erlangen, Germany.
authors.forename: W
authors.initials: W
authors.lastname: Meyer
authors.forename: D
authors.initials: D
authors.lastname: Hock
authors.forename: K
authors.initials: K
authors.lastname: Biedermann
authors.forename: M
authors.initials: M
authors.lastname: Gubo
authors.forename: S
authors.initials: S
authors.lastname: Müller
authors.forename: L
authors.initials: L
authors.lastname: Hammer
authors.forename: K
authors.initials: K
authors.lastname: Heinz