Interface-induced magnetism in perovskite quantum wells

Abstract

We investigate the angular dependence of the magnetoresistance of thin (< 1 nm), metallic SrTiO3 quantum wells epitaxially embedded in insulating, ferrimagnetic GdTiO3 and insulating, antiferromagnetic SmTiO3, respectively. The SrTiO3 quantum wells contain a high density of mobile electrons (~7x10^14 cm^-2). We show that the longitudinal and transverse magnetoresistance in the structures with GdTiO3 are consistent with anisotropic magnetoresistance, and thus indicative of induced ferromagnetism in the SrTiO3, rather than a nonequilibrium proximity effect. Comparison with the structures with antiferromagnetic SmTiO3 shows that the properties of thin SrTiO3 quantum wells can be tuned to obtain magnetic states that do not exist in the bulk material.

Accepted for publication as a Rapid Communication in Physical Review B

References in corpus (5)

• Theory of spin Hall magnetoresistance
• Magnetoelastic coupling in RETiO3 (RE = La, Nd, Sm, Gd, Y)
• Orbital-Spin Structure and Coupling to Lattice in RTiO${}_3$ with R=La,Pr,Nd and Sm
• Carrier-controlled ferromagnetism in SrTiO3
• Dimer Mott Insulator in an Oxide Heterostructure

Cited by in corpus (16)

• Giant gate-controlled proximity magnetoresistance in semiconductor-based ferromagnetic/nonmagnetic bilayers
• Correlation between metal-insulator transitions and structural distortions in high-electron-density SrTiO3 quantum wells
• Separation of transport lifetimes in SrTiO3-based two-dimensional electron liquids
• Evolution of ferromagnetism in two-dimensional electron gas of LaTiO3/SrTiO3
• Interface-driven ferromagnetism within the quantum wells of a rare earth titanate superlattice
• Magnetism and electronic structure of YTiO${}_3$ thin films
• Towards Mott design by $\delta$-doping of strongly correlated titanates
• Ferromagnetic fluctuations in the Rashba-Hubbard model
• Toward High Temperature Quasi-two-dimensional Superconductivity
• Current-induced spin polarization in isotropic k-cubed Rashba model: Theoretical study for p-doped semiconductor heterostructures and perovskite oxides interfaces
• Metallic interface in non-SrTiO3 based titanate superlattice
• Electron gas induced in SrTiO${}_3$
• Kinetic Magnetism at the Interface Between Mott and Band Insulators
• Disorder versus two transport lifetimes in a strongly correlated electron liquid
• Emergent antiferromagnetism of YTiO3 in YTiO3-CaTiO3 superlattices
• Light effect on the interface resistance of Ba${}_{0.8}$Sr${}_{0.2}$TiO${}_3$/LaMnO${}_3$ heterosctructure