Theory of the SrTiO3 Surface State Two-Dimensional Electron Gas

Abstract

We present a theory of the quasi two-dimensional electron gas (2DEG) systems which appear near the surface of SrTiO${}_3$ when a large external electric field attracts carriers to the surface. We find that non-linear and non-local screening by the strongly polarizable SrTiO${}_3$ lattice plays an essential role in determining 2DEG properties. The electronic structure always includes weakly bound bulk-like bands that extend over many SrTiO${}_3$ layers. At 2D carrier-densities exceeding $\sim 10^{14}{\mathrm{cm}}^{-2}$ tightly bound bands emerge that are confined within a few layers of the surface.

10 pages, 9 figures, 1 table

References in corpus (4)

• Magnetic effects at the interface between nonmagnetic oxides
• Electric Field Control of the LaAlO${}_3$/SrTiO${}_3$ Interface Ground State
• Avoiding the polarization catastrophe in LaAlO3 overlayers on SrTiO3(001) through a polar distortion
• Structure and Correlation Effects in Semiconducting SrTiO${}_3$

Cited by in corpus (72)

• Physics of SrTiO${}_3$-based heterostructures and nanostructures: a review
• Oxide spin-orbitronics: spin-charge interconversion and topological spin textures
• Theory of t2g electron-gas Rashba interactions
• A Gate-tunable Polarized Phase of Two-Dimensional Electrons at the LaAlO3/SrTiO3 Interface
• Electron Correlation in Oxygen Vacancy in SrTiO${}_3$
• Quantization of Hall Resistance at the Metallic Interface between an Oxide Insulator and SrTiO${}_3$
• Observation of out-of-plane spin texture in a SrTiO3 (111) two-dimensional electron gas
• Orientational tuning of the Fermi sea of confined electrons at the SrTiO3 (110) and (111) surfaces
• Toward an artificial Mott insulator: Correlations in confined, high-density electron liquids in SrTiO3
• Shubnikov-de Haas effect in low electron density SrTiO3: Conduction band edge of SrTiO3 redux
• Dual-Gate Modulation of Carrier Density and Disorder in an Oxide Two-Dimensional Electron System
• Large modulation of the Shubnikov-de Haas oscillations by the Rashba interaction at the LaAlO${}_3$/SrTiO${}_3$ interface
• Ferromagnetism in itinerant two-dimensional t2g systems
• Quantum longitudinal and Hall transport at the LaAlO3/SrTiO3 interface at low electron densities
• Novel metal-insulator-transition at the SrTiO3/SmTiO3 interface
• Accumulation, inversion, and depletion layers in SrTiO${}_3$
• Multiorbital Ferroelectric Superconductivity in doped SrTiO3
• Quantum confinement in perovskite oxide heterostructures: tight binding instead of nearly free electron picture
• Quantum oscillations from a two-dimensional electron gas at a Mott/band insulator interface
• Magneto-transport study of top- and back-gated LaAlO${}_3$/SrTiO${}_3$ heterostructures
• Multi-Orbital Superconductivity in SrTiO3 /LaAlO3 Interface and SrTiO3 Surface
• k.p subband structure of the LaAlO3/SrTiO3 interface
• Two-dimensional electron gas in a modulation-doped SrTiO3/Sr(Ti,Zr)O3 heterostructure
• Separation of transport lifetimes in SrTiO3-based two-dimensional electron liquids
• Superconductivity induced by fluctuations of momentum-based multipoles
• Spatially inhomogeneous electron state deep in the extreme quantum limit of strontium titanate
• Universal Structural Influence on the 2D Electron Gas at SrTiO${}_3$ Surfaces
• Symmetry and correlation effects on band structure explain the anomalous transport properties of (111) LaAlO${}_3$/SrTiO${}_3$
• Thermally excited multi-band conduction in LaAlO3/SrTiO3 heterostructures exhibiting magnetic scattering
• Unconventional Bloch-Grüneisen scattering in hybrid Bose-Fermi systems
• Magnetic and nematic orders of the 2DEG at oxide (111) surfaces and interfaces
• Competing superconducting phases in interacting two-dimensional electron gas with strong Rashba spin-orbit coupling
• Universality of Electron Mobility in LaAlO${}_3$/SrTiO${}_3$ and bulk SrTiO${}_3$
• Plasmons at the LaAlO${}_3$/SrTiO${}_3$ interface and Graphene-LaAlO${}_3$/SrTiO${}_3$ double layer
• Macroscopic description of the two-dimensional LaAlO${}_3$/SrTiO${}_3$ interface
• Tunable spin and orbital polarization in SrTiO3-based heterostructures
• Influence of the ferroelectric quantum critical point on SrTiO${}_3$ interfaces
• Quasiparticle Mass Enhancement and Fermi Surface Shape Modification in Oxide Two-Dimensional Electron Gases
• Quasi-isotropic orbital magnetoresistance in lightly doped SrTiO${}_3$
• Superconducting tunneling spectroscopy of spin-orbit coupling and orbital depairing in Nb:SrTiO${}_3$
• Long-range electronic reconstruction to a $d_{xz,yz}$-dominated Fermi surface below the LaAlO${}_3$/SrTiO${}_3$ interface
• Large longitudinal magnetoresistance of multivalley systems
• Subband structure of two-dimensional electron gases in SrTiO3
• Temperature-Dependent Band Structure of SrTiO${}_3$ Interfaces
• $d_{xz/yz}$ Orbital Subband Structures and Chiral Orbital Angular Momentum in the (001) Surface States of SrTiO${}_3$
• Collapse of electrons to a donor cluster in SrTiO${}_3$
• Two-dimensional electron gas at the LaAlO${}_3$/SrTiO${}_3$ inteface with a potential barrier
• Electron mobility of a two-dimensional electron gas at the interface of SrTiO${}_3$ and LaAlO${}_3$
• Effect of Sr-doping of LaMnO3 spacer on modulation-doped two-dimensional electron gases at oxide interfaces
• Current-induced spin polarization in isotropic k-cubed Rashba model: Theoretical study for p-doped semiconductor heterostructures and perovskite oxides interfaces
• Possible Flexoelectric Origin of the Lifshitz Transition in LaAlO${}_3$/SrTiO${}_3$ Interfaces
• Orbital and spin order in oxide two-dimensional electron gases
• Anomalous conductivity, Hall factor, magnetoresistance, and thermopower of accumulation layer in ${\text{SrTiO}}_3$
• Electron gas induced in SrTiO${}_3$
• Tunable Coupling of Two-Dimensional Superconductors in Bilayer SrTiO3 Heterostructures
• Longitudinal and transverse magnetoresistance of SrTiO${}_3$ with a single closed Fermi surface
• Anisotropic Magnetoresistance in Multiband Systems: 2DEGs and Polar Metals at Oxide Interfaces
• Mesoscopic pairing without superconductivity
• Structure and ferromagnetic instability of the oxygen-deficient SrTiO${}_3$ surface
• Majorana-Weyl cones in ferroelectric superconductors
• Cluster superconductivity in the magnetoelectric Pb(Fe1/2Sb1/2)O3 ceramics
• Ferroelectricity-induced multiorbital odd-frequency superconductivity in SrTiO${}_3$
• Spin texture driven spintronic enhancement at the LaAlO${}_3$/SrTiO${}_3$ interface
• Kinetic Magnetism at the Interface Between Mott and Band Insulators
• Multi-orbital Fulde-Ferrell-Larkin-Ovchinnikov State in SrTiO_3 Heterostructures
• Optical conductivity of the $t_{2g}$ two-dimensional electron gas
• Semiclassical spin transport in LaO/STO system in the presence of multiple Rashba spin orbit couplings
• Modified transverse Ising model for the dielectric properties of SrTiO${}_3$ films and interfaces
• Anomalous Thermodynamic Properties of Electron Accumulation Layer in SrTiO${}_3$
• Influence of a Realistic Multiorbital Band Structure on Conducting Domain Walls in Perovskite Ferroelectrics
• KTaO3(001) Preparation Methods in Vacuum: Effects on Surface Stoichiometry, Crystallography, and in-gap States
• Resonant Nonlinear Hall Effect in Two-Dimensional Electron Systems