Carrier-controlled ferromagnetism in SrTiO3

Abstract

Magnetotransport and superconducting properties are investigated for uniformly La-doped SrTiO3 films and GdTiO3/SrTiO3 heterostructures, respectively. GdTiO3/SrTiO3 interfaces exhibit a high-density two-dimensional electron gas on the SrTiO3-side of the interface, while for the SrTiO3 films carriers are provided by the dopant atoms. Both types of samples exhibit ferromagnetism at low temperatures, as evidenced by a hysteresis in the magnetoresistance. For the uniformly doped SrTiO3 films, the Curie temperature is found to increase with doping and to coexist with superconductivity for carrier concentrations on the high-density side of the superconducting dome. The Curie temperature of the GdTiO3/SrTiO3 heterostructures scales with the thickness of the SrTiO3 quantum well. The results are used to construct a stability diagram for the ferromagnetic and superconducting phases of SrTiO3.

Revised version that is closer to the published version; Fig. 2 corrected

References in corpus (1)

• Magnetic effects at the interface between nonmagnetic oxides

Cited by in corpus (25)

• Prospects and Applications Near Ferroelectric Quantum Phase Transitions
• Stability of skyrmion lattices and symmetries of quasi-two-dimensional chiral magnets
• Energetic, spatial and momentum character of a buried interface: the two-dimensional electron gas between two metal oxides
• Magnetic and Superconducting Ordering at LaAlO3/SrTiO3 Interfaces
• Separation of transport lifetimes in SrTiO3-based two-dimensional electron liquids
• Multi-band theory of superconductivity at the LaAlO${}_3$/SrTiO${}_3$ interface
• Electronic Structure of Oxide Interfaces: A Comparative Analysis of GdTiO${}_3$/SrTiO${}_3$ and LaAlO${}_3$/SrTiO${}_3$ Interfaces
• Magnetism and electronic structure of YTiO${}_3$ thin films
• Interface-driven ferromagnetism within the quantum wells of a rare earth titanate superlattice
• Ferroelectric control of spin-polarized two-dimensional electron gas
• Ferromagnetism and spin-dependent transport at a complex oxide interface
• Ferromagnetic fluctuations in the Rashba-Hubbard model
• Disentangling spin-orbit coupling and local magnetism in a quasi-two-dimensional electron system
• Emergent c-axis magnetic helix in manganite-nickelate superlattices
• Infrared study of carrier scattering mechanism in ion-gated graphene
• Observation by resonant angle-resolved photoemission of a critical thickness for 2-dimensional electron gas formation in SrTiO${}_3$ embedded in GdTiO${}_3$
• Anomalous transport near the Lifshitz transition at the LaAlO${}_3$/SrTiO${}_3$ interface
• $d_{xz/yz}$ Orbital Subband Structures and Chiral Orbital Angular Momentum in the (001) Surface States of SrTiO${}_3$
• Metallic interface in non-SrTiO3 based titanate superlattice
• Growth and characterization of large (Y,La)TiO${}_3$ and (Y,Ca)TiO${}_3$ single crystals
• Understanding the role of exchange and correlations in complex oxides under strain and oxide heterostructures
• Kinetic Magnetism at the Interface Between Mott and Band Insulators
• Revealing Optically Induced Magnetization in SrTiO${}_3$ using Optically Coupled SQUID Magnetometry and Magnetic Circular Dichroism
• Strong spin-orbit coupling and magnetism in (111) (La${}_{0.3}$Sr${}_{0.7}$)(Al${}_{0.65}$Ta${}_{0.35})$/SrTiO${}_3$
• Disorder versus two transport lifetimes in a strongly correlated electron liquid