Spin-Hall Current and Nonlocal Transport in Ferromagnet-Free Multi-band models for SrTiO3-Based Nanodevices in the presence of impurities

Abstract

We compute the spin-Hall conductance in a multiband model describing the two-dimensional electron gas formed at a LaAlO3/SrTiO3 interface in the presence of a finite concentration of impurities. Combining linear response theory with a systematic calculation of the impurity contributions to the self-energy, as well as to the vertex corrections of the relevant diagrams, we recover the full spin-Hall vs. sheet conductance dependence of LaAlO3/SrTiO3 as reported in Trier et al. [Nano Lett. 20, 395 (2020)], finding a very good agreement with the experimental data below and above the Lifshitz transition. In particular, we demonstrate that the multiband electronic structure leads to only a partial, instead of a complete, screening of the spin-Hall conductance, which decreases with increasing the carrier density. Our method can be generalized to other two-dimensional systems characterized by a broken inversion symmetry and multiband physics.

arXiv comment22 pages, 12 .eps figures

References in corpus (36)

• $Z_2$ Topological Order and the Quantum Spin Hall Effect
• Universal Intrinsic Spin-Hall Effect
• Quantum Spin Hall Effect and Topological Field Effect Transistor in Two-Dimensional Transition Metal Dichalcogenides
• Electric Field Control of the LaAlO${}_3$/SrTiO${}_3$ Interface Ground State
• Tunable Rashba spin-orbit interaction at oxide interfaces
• Highly efficient and tuneable spin-to-charge conversion through Rashba coupling at oxide interfaces
• Spin current and polarization in impure 2D electron systems with spin-orbit coupling
• Suppression of the Persistent Spin Hall Current by Defect Scattering
• Metallic and insulating interfaces of amorphous SrTiO3-based oxide heterostructures
• A Universal Critical Density Underlying the Physics of Electrons at the LaAlO3/SrTiO3 Interface
• Room temperature spin Hall effect in graphene/MoS${}_2$ van der Waals heterostructures
• Superconductivity and Ferromagnetism in Oxide Interface Structures: Possibility of Finite Momentum Pairing
• Spin-Hall effect in a disordered 2D electron-system
• Tunable room-temperature spin galvanic and spin Hall effects in van der Waals heterostructures
• Observation of Inverse Edelstein Effect in Rashba-Split 2DEG between SrTiO3 and LaAlO3 at Room Temperature
• Quasiparticle dynamics and spin-orbital texture of the SrTiO3 two-dimensional electron gas
• Oxide spin-orbitronics: spin-charge interconversion and topological spin textures
• Universal Fabrication of Two-Dimensional Electron Systems in Functional Oxides
• Theory of t2g electron-gas Rashba interactions
• Nonlocal Charge Transport Mediated by Spin Diffusion in the Spin-Hall Effect Regime
• Nonexistence of intrinsic spin currents
• Sum rules for spin-Hall conductivity cancelation
• Spin and orbital Edelstein effect in an oxide two-dimensional electron gas: theory and application to AlO${}_x$/SrTiO${}_3$
• Quantum Spin Hall Effect in 2D Transition Metal Dichalcogenide Haeckelites
• Small-angle impurity scattering and the spin Hall conductivity in 2D systems
• Giant negative magnetoresistance driven by spin-orbit coupling at the LAO/STO interface
• d0 Perovskite-Semiconductor Electronic Structure
• Magnetoconductance of a two-dimensional metal in the presence of spin-orbit coupling
• Topological states at the (001) surface of SrTiO3
• Intrinsic spin Hall effect in topological insulators: A first-principles study
• Spin Hall Effect in Bilayer Graphene Combined with an Insulator up to Room Temperature
• Evolution of topological superconductivity by orbital selective confinement in oxide nanowires
• Tunable spin and orbital Edelstein effect at (111) LaAlO${}_3$/SrTiO${}_3$ interface
• Interplay between singlet and triplet pairings in multi-band two-dimensional oxide superconductors
• Strain-induced topological phase transition at (111) SrTiO${}_3$-based heterostructures
• Thermal transport driven by charge imbalance in graphene in magnetic field, close to the charge neutrality point at low temperature: Non local resistance

Cited by in corpus (1)

• Theory of charge-to-spin conversion under quantum confinement