title: Coming across a novel copper oxide 2D framework during the oxidation of Cu(111).
abstract: Two dimensional copper oxides obtained on Cu(111) by air-enriched argon sputtering plus annealing have been measured at room temperature by means of scanning tunneling microscopy (STM) and atomic force microscopy (AFM) under ultra-high vacuum (UHV) conditions. Depending on the oxygen content different oxide frameworks and diverse stoichiometric metal/oxide interfaces exist. In particular, we report on a novel open honeycomb structure with a large unit cell which is modeled as a two dimensional network made out of Cu3O units. This lattice coexists with other oxide structures richer in oxygen and is suggested to develop towards these denser phases by oxygen incorporation.
authors.affiliation: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193 Bellaterra, Spain. cocal@icmab.es.
authors.forename: Sonia
authors.initials: S
authors.lastname: Matencio
authors.affiliation: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193 Bellaterra, Spain. cocal@icmab.es.
authors.forename: Esther
authors.initials: E
authors.lastname: Barrena
authors.affiliation: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193 Bellaterra, Spain. cocal@icmab.es.
authors.forename: Carmen
authors.identifier: http://orcid.org/0000-0001-8790-8844
authors.initials: C
authors.lastname: Ocal