title: Reversible Formation of 2D Electron Gas at the LaFeO3/SrTiO3Interface via Control of Oxygen Vacancies.
abstract: A conducting 2D electron gas (2DEG) is formed at the interface between epitaxial LaFeO3layers >3 unit cells thick and the surface of SrTiO3single crystals. The 2DEG is exquisitely sensitive to cation intermixing and oxygen nonstoichiometry. It is shown that the latter thus allows the controllable formation of the 2DEG via ionic liquid gating, thereby forming a nonvolatile switch.
authors.affiliation: IBM Research - Almaden, 650 Harry Road, San Jose, CA, 95120, USA.
authors.forename: Pengfa
authors.initials: P
authors.lastname: Xu
authors.affiliation: IBM Research - Almaden, 650 Harry Road, San Jose, CA, 95120, USA.
authors.forename: Wei
authors.initials: W
authors.lastname: Han
authors.affiliation: IBM Research - Almaden, 650 Harry Road, San Jose, CA, 95120, USA.
authors.forename: Philip M
authors.initials: PM
authors.lastname: Rice
authors.affiliation: IBM Research - Almaden, 650 Harry Road, San Jose, CA, 95120, USA.
authors.forename: Jaewoo
authors.initials: J
authors.lastname: Jeong
authors.affiliation: IBM Research - Almaden, 650 Harry Road, San Jose, CA, 95120, USA.
authors.forename: Mahesh G
authors.initials: MG
authors.lastname: Samant
authors.affiliation: Max Planck Institute for Microstructure Physics, Weinberg 2, 06120, Halle, Germany.
authors.forename: Katayoon
authors.initials: K
authors.lastname: Mohseni
authors.affiliation: Max Planck Institute for Microstructure Physics, Weinberg 2, 06120, Halle, Germany.
authors.forename: Holger L
authors.initials: HL
authors.lastname: Meyerheim
authors.affiliation: Max Planck Institute for Microstructure Physics, Weinberg 2, 06120, Halle, Germany.
authors.forename: Sergey
authors.initials: S
authors.lastname: Ostanin
authors.affiliation: Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06099, Halle, Germany.
authors.forename: Igor V
authors.initials: IV
authors.lastname: Maznichenko
authors.affiliation: Max Planck Institute for Microstructure Physics, Weinberg 2, 06120, Halle, Germany.|Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06099, Halle, Germany.
authors.forename: Ingrid
authors.initials: I
authors.lastname: Mertig
authors.affiliation: Max Planck Institute for Microstructure Physics, Weinberg 2, 06120, Halle, Germany.
authors.forename: Eberhard K U
authors.initials: EK
authors.lastname: Gross
authors.affiliation: Max Planck Institute for Microstructure Physics, Weinberg 2, 06120, Halle, Germany.
authors.forename: Arthur
authors.initials: A
authors.lastname: Ernst
authors.affiliation: IBM Research - Almaden, 650 Harry Road, San Jose, CA, 95120, USA.|Max Planck Institute for Microstructure Physics, Weinberg 2, 06120, Halle, Germany.
authors.forename: Stuart S P
authors.initials: SS
authors.lastname: Parkin
keywords: 2D electron gas; first principle calculation; ionic liquid gating; lanthanum ferrite; oxygen vacancy control