title: Oxygen-induced surface reconstruction of SrRuO3 and its effect on the BaTiO3 interface.
abstract: Atomically engineered oxide multilayers and superlattices display unique properties responsive to the electronic and atomic structures of the interfaces. We have followed the growth of ferroelectric BaTiO3 on SrRuO3 electrode with in situ atomic scale analysis of the surface structure at each stage. An oxygen-induced surface reconstruction of SrRuO3 leads to formation of SrO rows spaced at twice the bulk periodicity. This reconstruction modifies the structure of the first BaTiO3 layers grown subsequently, including intermixing observed with cross-section spectroscopy. These observations reveal that this common oxide interface is much more interesting than previously reported and provide a paradigm for oxygen engineering of oxide structure at an interface.
authors.affiliation: Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996, USA. jshin@ornl.gov
authors.forename: Junsoo
authors.initials: J
authors.lastname: Shin
authors.forename: Albina Y
authors.initials: AY
authors.lastname: Borisevich
authors.forename: Vincent
authors.initials: V
authors.lastname: Meunier
authors.forename: Jing
authors.initials: J
authors.lastname: Zhou
authors.forename: E Ward
authors.initials: EW
authors.lastname: Plummer
authors.forename: Sergei V
authors.initials: SV
authors.lastname: Kalinin
authors.forename: Arthur P
authors.initials: AP
authors.lastname: Baddorf
mesh_terms: D017609:Barium Compounds / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D016252:Microscopy, Scanning Tunneling; D010087:Oxides / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D017609:Barium Compounds; D010087:Oxides; C024547:barium titanate(IV); D012428:Ruthenium; D014025:Titanium; D010100:Oxygen