title: Superconductivity at the LaAlO(3)/SrTiO(3) interface.
abstract: We report on the structural characterization of LaAlO(3)/SrTiO(3) interfaces and on their transport properties. LaAlO(3) films were prepared using pulsed laser deposition onto TiO(2) terminated (001) SrTiO(3) substrates inducing a metallic conduction at the interface. Resistance and Hall effect measurements reveal a sheet carrier density between 0.4 and 1.2 × 10(14) electrons cm(-2) at room temperature and a mobility of ∼300 cm(2) V(-1) s(-1) at low temperatures. A transition to a superconducting state is observed at a temperature of ∼200 mK. The superconducting characteristics display signatures of 2D superconductivity.
authors.affiliation: DPMC, University of Geneva, 24 Quai E.-Ansermet 1211 Genève 4, Switzerland.
authors.forename: S
authors.initials: S
authors.lastname: Gariglio
authors.forename: N
authors.initials: N
authors.lastname: Reyren
authors.forename: A D
authors.initials: AD
authors.lastname: Caviglia
authors.forename: J-M
authors.initials: JM
authors.lastname: Triscone