title: In Situ Control of Separate Electronic Phases on SrTiO3 Surfaces by Oxygen Dosing.
abstract: Insulating SrTiO3 (STO) can host 2D electron systems (2DESs) on its surfaces, caused by oxygen defects. This study shows that the STO surface exhibits phase separation once the 2DES is formed and relates this inhomogeneity to recently reported magnetic order at STO surfaces and interfaces. The results open pathways to exploit oxygen defects for engineering the electronic and magnetic properties of oxides.
authors.affiliation: Physikalisches Institut and Röntgen Center for Complex Material Systems (RCCM), Universität Würzburg, D-97074, Würzburg, Germany. lenart.dudy@physik.uni-wuerzburg.de.
authors.forename: Lenart
authors.initials: L
authors.lastname: Dudy
authors.affiliation: Physikalisches Institut and Röntgen Center for Complex Material Systems (RCCM), Universität Würzburg, D-97074, Würzburg, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Sing
authors.affiliation: Physikalisches Institut and Röntgen Center for Complex Material Systems (RCCM), Universität Würzburg, D-97074, Würzburg, Germany.
authors.forename: Philipp
authors.initials: P
authors.lastname: Scheiderer
authors.affiliation: Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94270, USA.
authors.forename: Jonathan D
authors.initials: JD
authors.lastname: Denlinger
authors.affiliation: Physikalisches Institut and Röntgen Center for Complex Material Systems (RCCM), Universität Würzburg, D-97074, Würzburg, Germany.
authors.forename: Philipp
authors.initials: P
authors.lastname: Schütz
authors.affiliation: Physikalisches Institut and Röntgen Center for Complex Material Systems (RCCM), Universität Würzburg, D-97074, Würzburg, Germany.
authors.forename: Judith
authors.initials: J
authors.lastname: Gabel
authors.affiliation: Physikalisches Institut and Röntgen Center for Complex Material Systems (RCCM), Universität Würzburg, D-97074, Würzburg, Germany.
authors.forename: Mathias
authors.initials: M
authors.lastname: Buchwald
authors.affiliation: Diamond Light Source Ltd, Didcot, Oxfordshire, OX11 0DE, UK.
authors.forename: Christoph
authors.initials: C
authors.lastname: Schlueter
authors.affiliation: Diamond Light Source Ltd, Didcot, Oxfordshire, OX11 0DE, UK.
authors.forename: Tien-Lin
authors.initials: TL
authors.lastname: Lee
authors.affiliation: Physikalisches Institut and Röntgen Center for Complex Material Systems (RCCM), Universität Würzburg, D-97074, Würzburg, Germany.
authors.forename: Ralph
authors.initials: R
authors.lastname: Claessen
keywords: functional oxides; heterostructures; oxide; oxygen control; phase separation; transition metal oxides