title: Tunable Rashba spin-orbit interaction at oxide interfaces.
abstract: The quasi-two-dimensional electron gas found at the LaAlO{3}/SrTiO{3} interface offers exciting new functionalities, such as tunable superconductivity, and has been proposed as a new nanoelectronics fabrication platform. Here we lay out a new example of an electronic property arising from the interfacial breaking of inversion symmetry, namely, a large Rashba spin-orbit interaction, whose magnitude can be modulated by the application of an external electric field. By means of magnetotransport experiments we explore the evolution of the spin-orbit coupling across the phase diagram of the system. We uncover a steep rise in Rashba interaction occurring around the doping level where a quantum critical point separates the insulating and superconducting ground states of the system.
authors.affiliation: Département de Physique de la Matière Condensée, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Genève 4, Switzerland.
authors.forename: A D
authors.initials: AD
authors.lastname: Caviglia
authors.forename: M
authors.initials: M
authors.lastname: Gabay
authors.forename: S
authors.initials: S
authors.lastname: Gariglio
authors.forename: N
authors.initials: N
authors.lastname: Reyren
authors.forename: C
authors.initials: C
authors.lastname: Cancellieri
authors.forename: J-M
authors.initials: JM
authors.lastname: Triscone