Physics of SrTiO${}_3$-based heterostructures and nanostructures: a review

Abstract

This review provides a summary of the rich physics expressed within SrTiO${}_3$-based heterostructures and nanostructures. The intended audience is researchers who are working in the field of oxides, but also those with different backgrounds (e.g., semiconductor nanostructures). After reviewing the relevant properties of SrTiO${}_3$ itself, we will then discuss the basics of SrTiO${}_3$-based heterostructures, how they can be grown, and how devices are typically fabricated. Next, we will cover the physics of these heterostructures, including their phase diagram and coupling between the various degrees of freedom. Finally, we will review the rich landscape of quantum transport phenomena, as well as the devices that elicit them.

92 pages, 22 figures

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• Electric Field Control of the LaAlO${}_3$/SrTiO${}_3$ Interface Ground State
• Tunable Rashba spin-orbit interaction at oxide interfaces
• Interface-Induced Phenomena in Magnetism
• Direct imaging of the coexistence of ferromagnetism and superconductivity at the LaAlO3/SrTiO3 interface
• Coexistence of Magnetic Order and Two-dimensional Superconductivity at LaAlO${}_3$/SrTiO${}_3$ Interfaces
• Unveiling a two-dimensional electron gas with universal subbands at the surface of SrTiO3
• The role of oxygen vacancies in SrTiO3 at the LaAlO3/SrTiO3 interface
• Strain gradient induced polarization in SrTiO3 single crystals
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• High Mobility in LaAlO3/SrTiO3 Heterostructures: Origin, Dimensionality and Perspectives
• Origin of charge density at LaAlO3-on-SrTiO3 hetero-interfaces; possibility of intrinsic doping
• Highly efficient and tuneable spin-to-charge conversion through Rashba coupling at oxide interfaces
• Creation and control of a two-dimensional electron liquid at the bare SrTiO3 surface
• Coexistence of superconductivity and ferromagnetism in two dimensions
• Mapping the Spatial Distribution of Charge Carriers in LaAlO3/SrTiO3 Heterostructures
• Tuning spin-orbit coupling and superconductivity at the SrTiO3/LaAlO3 interface: a magneto-transport study
• Theory of spin-orbit coupling at LaAlO3/SrTiO3 interfaces and SrTiO3 surfaces
• Metallic and insulating interfaces of amorphous SrTiO3-based oxide heterostructures
• A high-mobility two-dimensional electron gas at the heteroepitaxial spinel/perovskite complex oxide interface of γ-Al2O3/SrTiO3
• A Universal Critical Density Underlying the Physics of Electrons at the LaAlO3/SrTiO3 Interface
• Quantum criticality in ferroelectrics
• Avoiding the polarization catastrophe in LaAlO3 overlayers on SrTiO3(001) through a polar distortion
• A polarity-induced defect mechanism for conductivity and magnetism at polar-nonpolar oxide interfaces
• Profiling the interface electron gas of LaAlO3/SrTiO3 heterostructures by hard X-ray photoelectron spectroscopy
• Dominant mobility modulation by the electric field effect at the LaAlO_3 / SrTiO_3 interface
• Two-dimensional quantum oscillations of the conductance at LaAlO3/SrTiO3 interfaces
• Tailoring a two-dimensional electron gas at the LaAlO3/SrTiO3 (001) interface by epitaxial strain
• Electrostatic carrier doping of GdTiO3/SrTiO3 interfaces
• A ferroelectric quantum phase transition inside the superconducting dome of Sr${}_{1-x}$Ca${}_x$TiO${}_{3-\delta }$
• Tailoring the nature and strength of electron-phonon interactions in the SrTiO${}_3$(001) two-dimensional electron liquid
• Superconductivity and Ferromagnetism in Oxide Interface Structures: Possibility of Finite Momentum Pairing
• LaAlO3 stoichiometry found key to electron liquid formation at LaAlO3/SrTiO3 interfaces
• Origin of the two-dimensional electron gas at LaAlO3/SrTiO3 interfaces: The role of oxygen vacancies and electronic reconstruction
• Critical thickness for ferromagnetism in LaAlO3/SrTiO3 heterostructures
• Locally enhanced conductivity due to the tetragonal domain structure in LaAlO${}_3$/SrTiO${}_3$ heterointerfaces
• Transport in strongly correlated two dimensional electron fluids
• Built-in and induced polarization across LaAlO${}_3$/SrTiO${}_3$ heterojunctions
• Sources of experimental errors in the observation of nanoscale magnetism
• Quantum critical origin of the superconducting dome in SrTiO${}_3$
• Origin of interface magnetism in BiMnO3/SrTiO3 and LaAlO3/SrTiO3 heterostructures
• Observation of Inverse Edelstein Effect in Rashba-Split 2DEG between SrTiO3 and LaAlO3 at Room Temperature
• Electrolyte gate-controlled Kondo effect in SrTiO3
• High mobility conduction at (110) and (111) LaAlO3/SrTiO3 interfaces
• Critical doping for the onset of a two-band superconducting ground state in SrTiO${}_{3-\delta }$
• Polaronic metal state at the LaAlO3/SrTiO3 interface
• "Water-cycle" mechanism for writing and erasing nanostructures at the LaAlO3/SrTiO3 interface
• Nonlinear Hall effect and multichannel conduction in LaTiO3/SrTiO3 superlattices
• Quasiparticle dynamics and spin-orbital texture of the SrTiO3 two-dimensional electron gas
• Ferromagnetic exchange, spin-orbit coupling and spiral magnetism at the LaAlO_3/SrTiO_3 interface
• Local Electrostatic Imaging of Striped Domain Order in LaAlO3/SrTiO3
• Shubnikov-de Haas oscillations in SrTiO3\LaAlO3 interface
• Towards two-dimensional metallic behavior at LaAlO3/SrTiO3 interfaces
• Surface defects and conduction in polar oxide heterostructures
• Fermi surface of the most dilute superconductor
• Electron transfer and ionic displacements at the origin of the 2D electron gas at the LAO/STO interface: Direct measurements with atomic-column spatial resolution
• Direct k-space mapping of the electronic structure in an oxide-oxide interface
• Anisotropic magneto-transport effects at SrTiO3\LaAlO3 interfaces
• Challenges and opportunities of ZnO-related single crystalline heterostructures
• Nanoscale Phenomena in Oxide Heterostructures
• Room-Temperature Electronically-Controlled Ferromagnetism at the LaAlO3/SrTiO3 Interface
• Carrier freeze-out induced metal-insulator transition in oxygen deficient SrTiO3 films
• Polarity-induced oxygen vacancies at LaAlO3|SrTiO3 interfaces
• Oxygen vacancies at titanate interfaces: two-dimensional magnetism and orbital reconstruction
• Theory of the SrTiO3 Surface State Two-Dimensional Electron Gas
• Conducting interfaces between band insulating oxides: the LaGaO3/SrTiO3
• Competition and cooperation between antiferrodistortive and ferroelectric instabilities in SrTiO${}_3$
• Polar catastrophe and electronic reconstructions at the LaAlO3/SrTiO3 interface: evidence from optical second harmonic generation
• Superconductivity at very low density: the case of strontium titanate
• Pressure-temperature phase diagram of SrTiO3 up to 53 GPa
• A Gate-tunable Polarized Phase of Two-Dimensional Electrons at the LaAlO3/SrTiO3 Interface
• Persistent Optically Induced Magnetism in Oxygen-Deficient Strontium Titanate
• Electron Correlation in Oxygen Vacancy in SrTiO${}_3$
• Topological superconductivity and unconventional pairing in oxide interfaces
• Charge writing at the LaAlO3/SrTiO3 surface
• Phase diagram of electrostatically doped Strontium Titanate (SrTiO3)
• Defect engineering in oxide heterostructures by enhanced oxygen surface exchange
• Control of a two-dimensional electron gas on SrTiO3(111) by atomic oxygen
• Quantization of Hall Resistance at the Metallic Interface between an Oxide Insulator and SrTiO${}_3$
• Dynamical response and confinement of the electrons at the LaAlO3/SrTiO3 interface
• Atomically flat single terminated oxide substrate surfaces
• Creation of high mobility two-dimensional electron gases via strain induced polarization at an otherwise nonpolar complex oxide interface
• Rashba induced magnetoconductance oscillations in the LaAlO3-SrTiO3 heterostructure
• Origin and Transport Signatures of Spin-Orbit Interactions in One- and Two-Dimensional SrTiO${}_3$-Based Heterostructures
• Phonon mechanism in the most dilute superconductor: n-type SrTiO3
• Localized electronic states induced by defects and possible origin of ferroelectricity in strontium titanate thin films
• A high-mobility electronic system at an electrolyte-gated oxide surface
• Structure and Correlation Effects in Semiconducting SrTiO${}_3$
• The effect of intrinsic point defects on ferroelectric polarization behavior of SrTiO${}_3$
• Prospects and Applications Near Ferroelectric Quantum Phase Transitions
• Giant negative magnetoresistance driven by spin-orbit coupling at the LAO/STO interface
• Doping-dependent band structure of LaAlO${}_3$/SrTiO${}_3$ interfaces by soft x-ray polarization-controlled resonant angle-resolved photoemission
• Observation of room-temperature ferroelectricity in tetragonal strontium titanate thin films on SrTiO3 (001) substrates
• Electronic structure induced reconstruction and magnetic ordering at the LaAlO${}_3|$SrTiO${}_3$ interface
• Upper limit to magnetism in LaAlO3/SrTiO3 heterostructures
• Strong correlations elucidate the electronic structure and phase-diagram of LaAlO3/SrTiO3 interface
• Emergent nanoscale superparamagnetism at oxide interfaces
• Nature of weak magnetism in SrTiO3/LaAlO3 multilayers
• Phase transitions via selective elemental vacancy engineering in complex oxide thin films
• Toward an artificial Mott insulator: Correlations in confined, high-density electron liquids in SrTiO3
• Hard x-ray photoemission and density functional theory study of the internal electric field in SrTiO3/LaAlO3 oxide heterostructures
• Strong electronic correlation and strain effects at the interfaces between polar and nonpolar complex oxides
• Six-fold crystalline anisotropic magnetoresistance in the (111) LaAlO${}_3$/SrTiO${}_3$ oxide interface
• Phase separation from electron confinement at oxide interfaces
• Shubnikov-de Haas effect in low electron density SrTiO3: Conduction band edge of SrTiO3 redux
• In-plane electronic confinement in superconducting LaAlO${}_3$/SrTiO${}_3$ nanostructures
• Liquid-Gated High Mobility and Quantum Oscillation of the Two-Dimensional Electron Gas at an Oxide Interface
• Intrinsic spin-orbit coupling in superconducting δ-doped SrTiO3 heterostructures
• Magnetism, spin texture and in-gap states: Atomic specialization at the surface of oxygen-deficient SrTiO${}_3$
• Magnetoresistance of 2D and 3D Electron Gas in LaAlO3/SrTiO3 Heterostructures: Influence of Magnetic Ordering, Interface Scattering and Dimensionality
• Multi-band superconductivity and nanoscale inhomogeneity at oxide interfaces
• Strong evidence for d-electron spin transport at room temperature at a LaAlO3/SrTiO3 interface
• Dual-Gate Modulation of Carrier Density and Disorder in an Oxide Two-Dimensional Electron System
• Antisymmetric magnetoresistance of the SrTiO3/LaAlO3 interface
• Gate-tunable band structure of the LaAlO${}_3$-SrTiO${}_3$ interface
• Anomalously large measured thermoelectric power factor in Sr${}_{1-x}$La${}_x$TiO${}_3$ thin films due to SrTiO${}_3$ substrate reduction
• Local Ferroelectricity in SrTiO_3 Thin Films
• Weak-localization and spin-orbit interaction in side-gate field effect devices at the LaAlO${}_3$/SrTiO${}_3$ interface
• Magnetic and Superconducting Ordering at LaAlO3/SrTiO3 Interfaces
• Large modulation of the Shubnikov-de Haas oscillations by the Rashba interaction at the LaAlO${}_3$/SrTiO${}_3$ interface
• Fermi liquids and non--Fermi liquids
• Tunable electron-electron interactions in LaAlO3/SrTiO3 nanostructures
• Fermi surface and superconductivity in low-density high-mobility δ-doped SrTiO3
• Magnetism and metal-insulator transition in oxygen deficient SrTiO${}_3$
• Band offsets and density of Ti3+ states probed by X-ray photoemission on LaAlO3/SrTiO3 heterointerfaces and their LaAlO3 and SrTiO3 bulk precursors
• Anisotropic transport at the LaAlO3/SrTiO3 interface explained by microscopic imaging of channel-flow over SrTiO3 domains
• Spin injection and detection in lanthanum- and niobium-doped SrTiO3 using the Hanle technique
• Observation of a two-dimensional electron gas at the surface of annealed SrTiO3 single crystals by scanning tunneling spectroscopy
• Growth-induced electron mobility enhancement at the LaAlO${}_3$/SrTiO${}_3$ interface
• Quantum longitudinal and Hall transport at the LaAlO3/SrTiO3 interface at low electron densities
• Metal-Insulator Transition of the LaAlO3-SrTiO3 Interface Electron System
• Side gate tunable Josephson junctions at the LaAlO${}_3$/SrTiO${}_3$ interface
• Accumulation, inversion, and depletion layers in SrTiO${}_3$
• Interface superconductivity in LaAlO${}_3$-SrTiO${}_3$ heterostructures
• Quantum interference in an interfacial superconductor
• Charge density distribution and optical response of the LaAlO3/SrTiO3 interface
• Controlling Kondo-like Scattering at the SrTiO3-based Interfaces
• Enhanced Superconducting Transition Temperature due to Tetragonal Domains in Two-Dimensionally Doped SrTiO${}_3$
• Enhanced spin-orbit interaction and Kondo scattering in $\delta$-doped LaTiO${}_3$/SrTiO${}_3$ interfaces
• Electron-phonon Coupling and the Superconducting Phase Diagram of the LaAlO3-SrTiO3 Interface
• Interplay between antiferrodistortive, ferroelectric and superconducting instabilities in Sr_{1-x}Ca_{x}$TiO_{3-δ}
• One-dimensional Quantum Wire Formed at the Boundary Between Two Insulating LaAlO3/SrTiO3 Interfaces
• Micrometer-scale ballistic transport of electron pairs in LaAlO3/SrTiO3 nanowires
• Quantum oscillations from a two-dimensional electron gas at a Mott/band insulator interface
• Absence of Giant Spin Splitting in the Two-Dimensional Electron Liquid at the Surface of SrTiO${}_3$ (001)
• Magnetic-field induced resistivity minimum with in-plane linear magnetoresistance of the Fermi liquid in SrTiO3-x single crystals
• Anomalous magnetic ground state in LaAlO3/SrTiO3 interface probed by transport through nanowires
• Nanoscale rectification at the LaAlO3/SrTiO3 interface
• Superconducting LaAlO3/SrTiO3 Nanowires
• Anomalous Transport in Sketched Nanostructures at the LaAlO3/SrTiO3 Interface
• Effect of disorder on superconductivity and Rashba spin-orbit coupling in LaAlO3/SrTiO3 interfaces
• Phase coherent transport in SrTiO3/LaAlO3 interfaces
• Anisotropic electrical resistance in mesoscopic LaAlO${}_3$/SrTiO${}_3$ devices with individual domain walls
• S-wave Superconductivity in Optimally Doped SrTi${}_{1-x}$Nb${}_x$O${}_3$ Unveiled by Electron Irradiation
• Plentiful magnetic moments in oxygen deficient SrTiO3
• High field magneto-transport in two-dimensional electron gas LaAlO3/SrTiO3
• Spin-texture induced by oxygen vacancies in Strontium perovskites (001) surfaces: A theoretical comparison between SrTiO3 and SrHfO3
• Electric field control of spin lifetimes in Nb-SrTiO${}_3$ by spin-orbit fields
• Ab-initio Low-Energy Model of Transition-Metal-Oxide Heterostructure LaAlO3/SrTiO3
• Electronic Structure of Oxide Interfaces: A Comparative Analysis of GdTiO${}_3$/SrTiO${}_3$ and LaAlO${}_3$/SrTiO${}_3$ Interfaces
• Atomically flat interface between a single-terminated LaAlO3 substrate and SrTiO3 thin film is insulating
• Tunneling into a quantum confinement created by a single-step nano-lithography of conducting oxide interfaces
• Evolution of variable range hopping in strongly localized two dimensional electron gas at NdAlO3/SrTiO3 (100) heterointerfaces
• Interface-driven ferromagnetism within the quantum wells of a rare earth titanate superlattice
• Oxygen-vacancy clustering and pseudogap behaviour at LaAlO3/SrTiO3 interface
• Evidence for Superconducting Phase Coherence in the Metallic/Insulating Regime of the LaAlO3-SrTiO3 Interface Electron System
• Interplay between sheet resistance increase and magnetotransport properties in $\mathrm{LaAl}{\mathrm{O}}_3/\mathrm{SrTi}{\mathrm{O}}_3$
• Interface-induced d-wave pairing
• Universal Conductance Fluctuations in Electrolyte-Gated SrTiO3 Nanostructures
• Electrical transport properties of polar heterointerface between KTaO3 and SrTiO3
• Field-effect control of superconductivity and Rashba spin-orbit coupling in top-gated LaAlO3/SrTiO3 devices
• Correlation-Induced Band Competition in SrTiO3/LaAlO3
• Quantized Ballistic Transport of Electrons and Electron Pairs in LaAlO${}_3$/SrTiO${}_3$ Nanowires
• Comment on two papers claiming records for the lowest carrier concentration at which superconductivity has been observed
• Nonlocal Piezoresponse of LaAlO3/SrTiO3 Heterostructures
• LaAlO${}_3$/SrTiO${}_3$: a tale of two magnetisms
• Constructing oxide interfaces and heterostructures by atomic layer-by-layer laser molecular beam epitaxy

Cited by in corpus (71)

• Terahertz-Field-Induced Ferroelectricity in Quantum Paraelectric SrTiO${}_3$
• Superconductivity in dilute SrTiO${}_3$: a review
• When Superconductivity Crosses Over: From BCS to BEC
• Electronic phase separation: recent progress in the old problem
• Oxygen vacancy induced electronic structure modification of KTaO${}_3$
• Band Bending and Valence Band Quantization at Line Defects in MoS${}_2$
• Magnetic and electronic properties at the gamma-Al2O3/SrTiO3 interface
• Quantum ferroelectric instabilities in superconducting SrTiO${}_3$
• Evolution of topological superconductivity by orbital selective confinement in oxide nanowires
• High sensitivity variable-temperature infrared nanoscopy of conducting oxide interfaces
• Evidence of Rotational Fröhlich Coupling in Polaronic Trions
• Tunable spin and orbital Edelstein effect at (111) LaAlO${}_3$/SrTiO${}_3$ interface
• Engineered spin-orbit interactions in LaAlO${}_3$/SrTiO${}_3$-based 1D serpentine electron waveguides
• Nanoscale control of the metal-insulator transition at LAO/KTO (110) and LAO/KTO (111) interfaces
• Hallmarks of non-trivial topology in Josephson junctions based on oxide nanochannels
• Engineered Josephson diode effect in kinked Rashba nanochannels
• Designing topology and fractionalization in narrow gap semiconductor films via electrostatic engineering
• Gate tunable anomalous Hall effect: a Berry curvature probe at oxides interfaces
• Twisted-bilayer FeSe and the Fe-based superlattices
• Probing Topological Superconductivity of oxide nanojunctions using fractional Shapiro steps
• Tunable Rashba spin-orbit coupling and its interplay with multiorbital effect and magnetic ordering at oxide interfaces
• Non-universal current flow near the metal-insulator transition in an oxide interface
• Tunable spin and orbital polarization in SrTiO3-based heterostructures
• Intrinsic magnetism in KTaO${}_3$ heterostructures
• Scalable $\mathrm{A}{\mathrm{l}}_2{\mathrm{O}}_3-\mathrm{Ti}{\mathrm{O}}_2$ Conductive Oxide Interfaces as Defect Reservoirs for Resistive Switching Devices
• Spin to charge conversion at Rashba-split SrTiO${}_3$ interfaces from resonant tunneling
• Flux-flow instability across Berezinskii Kosterlitz Thouless phase transition in KTaO${}_3$ (111) based superconductor
• Strain-induced topological phase transition at (111) SrTiO${}_3$-based heterostructures
• Resistive switching suppression in metal/Nb:SrTiO${}_3$ Schottky contacts prepared by room-temperature Pulsed Laser Deposition
• Spin-orbital polarization of Majorana edge states in oxides nanowires
• Ballistic transport through quantum point contacts of multi-orbital oxides
• A two-dimensional space-time terahertz memory in bulk SrTiO3
• Electron correlations due to pair spin-orbit interaction in 2D electron systems
• Rashba-metal to Mott-insulator transition
• Strain-driven sign interchange of surface two-dimensional electron and hole gases in KTaO3 thin film
• Nature of electrons from oxygen vacancies and polar catastrophe at LaAlO3/SrTiO3 interfaces
• Gate-Tunable Optical Nonlinearities and Extinction in Graphene/LaAlO${}_3$/SrTiO${}_3$ Nanostructures
• Polar discontinuities and interfacial electronic properties of Bi${}_2$O${}_2$Se on SrTiO${}_3$
• Electron Pairing and Nematicity in LaAlO${}_3$/SrTiO${}_3$ Nanostructures
• Ionic liquid gating of SrTiO${}_3$ lamellas fabricated with a focused ion beam
• Tunning Spin Hall conductivities in GeTe by Ferroelectric Polarization
• One-dimensional Kronig-Penney superlattices at the LaAlO${}_3$/SrTiO${}_3$ interface
• Mesoscopic pairing without superconductivity
• Irreversible multi-band effects and Lifshitz transitions at the LaAlO3/SrTiO3 interface under field effect
• 50 Ohm Transmission Lines with Extreme Wavelength Compression Based on Superconducting Nanowires on High-Permittivity Substrates
• Strain-controlled Insulator-Metal Transition in YTiO3/SrTiO3 Superlattices: A First-Principles Study
• Spin-orbit-assisted electron pairing in 1D waveguides
• Reconfigurable edge-state engineering in graphene using LaAlO${}_3$/SrTiO${}_3$ nanostructures
• Ground state features and spectral properties of large polaron liquids from low to high charge densities
• Effect of confinement and Coulomb interactions on the electronic structure of (111) LaAlO${}_3$/SrTiO${}_3$ interface
• Lattice Parameters and Bulk Modulus of SrTi${}_{1-x}$Mn${}_x$O${}_3$ Perovskites: A Comparison of Exchange-Correlation Functionals with Experimental Validation
• Beyond being free: glassy dynamics of SrTiO${}_3$-based two-dimensional electron gas
• Anti-Localization in Oxides: Effective Spin-3/2 Model
• Domain walls in strontium titanate
• First-principles based Monte Carlo modeling of oxygen deficient Fe-substituted SrTiO${}_3$ experimental magnetization
• On the formation of a conducting surface channel by ionic liquid gating of an insulator
• Orbital-resolved anisotropic electron pockets in electron-doped SrTiO3 observed by ARPES
• Magnetotransport of a 2DEG with anisotropic Rashba interaction at the LaAlO${}_3$/SrTiO${}_3$ interface
• THz carrier dynamics in $SrTi{O}_3/LaTi{O}_3$ interface two-dimensional electron gases
• Gate-Tunable Optical Extinction of Graphene Nanoribbon Nanoclusters
• Strong Aharonov-Bohm quantum interference in simply-connected LaAlO${}_3$/SrTiO${}_3$ structures
• Influence of a Realistic Multiorbital Band Structure on Conducting Domain Walls in Perovskite Ferroelectrics
• Electronic transport in thin films of BaPbO${}_3$: Unraveling two-dimensional quantum effects
• Spin-dependent anisotropic electron-phonon coupling in KTaO${}_3$
• Surface acoustic wave generation and detection in quantum paraelectric regime of SrTiO${}_3$-based heterostructure
• Oxygen deficiency and migration mediated electric polarization in Fe,Co-substituted SrTiO${}_{3-\delta }$
• Boltzmann theory of the inverse Edelstein effect in a two-dimensional Rashba gas
• Dependence of the Inverse Spin Hall Effect in Sr(Nb${}_x$Ti${}_{1-x}$)O${}_3$ on the Nb concentration
• Scanning gate microscopy probing of anisotropic electron flow in a two dimensional electron gas at the (110) ${\mathrm{LaAlO}}_3/{\mathrm{SrTiO}}_3$ interface: A theoretical investigation
• Magnetotransport of Functional Oxide Heterostructures Affected by Spin-Orbit Coupling: A Tale of Two-Dimensional Systems
• Lithography-free patterning of SrTiO${}_3$-based two-dimensional electron gases using direct atomic layer processing