Two-dimensional electron liquid state at LaAlO3-SrTiO3 interfaces

Abstract

Using tunneling spectroscopy we have measured the spectral density of states of the mobile, two-dimensional electron system generated at the LaAlO3-SrTiO3 interface. As shown by the density of states the interface electron system differs qualitatively, first, from the electron systems of the materials defining the interface and, second, from the two-dimensional electron gases formed at interfaces between conventional semiconductors.

References in corpus (12)

• Magnetic effects at the interface between nonmagnetic oxides
• Electric Field Control of the LaAlO${}_3$/SrTiO${}_3$ Interface Ground State
• Mapping the Spatial Distribution of Charge Carriers in LaAlO3/SrTiO3 Heterostructures
• Avoiding the polarization catastrophe in LaAlO3 overlayers on SrTiO3(001) through a polar distortion
• Orbital reconstruction and two-dimensional electron gas at the LaAlO3/SrTiO3 interface
• Profiling the interface electron gas of LaAlO3/SrTiO3 heterostructures by hard X-ray photoelectron spectroscopy
• Lattice relaxation, electronic screening, and spin and orbital phase diagram of LaTiO${}_3$/SrTiO${}_3$ superlattices
• Towards two-dimensional metallic behavior at LaAlO3/SrTiO3 interfaces
• Ab initio calculations of the atomic and electronic structure of CaTiO3 (001) and (011) surfaces
• Surface Effects on Oxide Heterostructures
• Interface relaxation and electrostatic charge depletion in the oxide heterostructure LaAlO3/SrTiO3
• Exponential decay of relaxation effects at LaAlO3/SrTiO3 heterointerfaces

Cited by in corpus (47)

• Creation and control of a two-dimensional electron liquid at the bare SrTiO3 surface
• Two-dimensional quantum oscillations of the conductance at LaAlO3/SrTiO3 interfaces
• LaAlO3 stoichiometry found key to electron liquid formation at LaAlO3/SrTiO3 interfaces
• Subband structure of a two-dimensional electron gas formed at the polar surface of the strong spin-orbit perovskite KTaO${}_3$
• Fundamental studies of superconductors using scanning magnetic imaging
• Polaronic metal state at the LaAlO3/SrTiO3 interface
• Local Electrostatic Imaging of Striped Domain Order in LaAlO3/SrTiO3
• Magnetism and superconductivity at LAO/STO-interfaces: the role of Ti 3d interface electrons
• Oxygen vacancies at titanate interfaces: two-dimensional magnetism and orbital reconstruction
• Quantization of Hall Resistance at the Metallic Interface between an Oxide Insulator and SrTiO${}_3$
• Quantum-Matter Heterostructures
• Strong correlations elucidate the electronic structure and phase-diagram of LaAlO3/SrTiO3 interface
• Giant Oscillating Thermopower at Oxide Interfaces
• The interfacial effects on the spin density wave in FeSe/SrTiO3 thin film
• Magnetic and Superconducting Ordering at LaAlO3/SrTiO3 Interfaces
• Competition Between Kondo Screening and Magnetism 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
• Emerging magnetism and electronic phase separation at titanate interfaces
• Route to Topological Superconductivity via Magnetic Field Rotation
• Field Effect Transistors with Sub-Micrometer Gate Lengths Fabricated from LaAlO${}_3$-SrTiO${}_3$-Based Heterostructures
• Electron correlation and magnetism at the LaAlO${}_3$/SrTiO${}_3$ interface: A DFT+DMFT investigation
• In-gap features in superconducting LaAlO${}_3$-SrTiO${}_3$ interfaces observed by tunneling spectroscopy
• k.p subband structure of the LaAlO3/SrTiO3 interface
• Electronic phase separation at LaAlO3/SrTiO3 interfaces tunable by oxygen deficiency
• Large Negative Electronic Compressibility of LaAlO3-SrTiO3 Interfaces with Ultrathin LaAlO3 Layers
• Diodes with Breakdown Voltages Enhanced by the Metal-Insulator Transition of LaAlO${}_3$-SrTiO${}_3$ Interfaces
• Interface exchange processes in LaAlO${}_3$/SrTiO${}_3$ induced by oxygen vacancies
• Metal-insulator transition at the LaAlO3/SrTiO3 interface revisited: A hybrid functional study
• Oxygen vacancies and hydrogen doping in LaAlO3/SrTiO3 heterostructures: electronic properties and impact on surface and interface reconstruction
• Electronic properties of LaAlO3/SrTiO3 n-type interfaces: A GGA+U study
• Tunneling into a quantum confinement created by a single-step nano-lithography of conducting oxide interfaces
• Correlation between Superconductivity, Band Filling and Electron Confinement at the LaAlO${}_3$-SrTiO${}_3$ Interface
• The mechanism of spin-orbit coupling in a 2D oxide interface
• Superconducting dome in the LaAlO${}_3$/SrTiO${}_3$ interfaces as a direct effect of the extended s-wave symmetry of the gap
• Interface-Driven Two-Dimensional Superconductivity in Bilayers of BaBiO${}_3$ and BaPbO${}_3$
• Artificial Atoms Based on Correlated Materials
• Evidence for Superconducting Phase Coherence in the Metallic/Insulating Regime of the LaAlO3-SrTiO3 Interface Electron System
• Interplay between singlet and triplet pairings in multi-band two-dimensional oxide superconductors
• Many-body effects on the capacitance of multilayers made from strongly correlated materials
• Structure and ferromagnetic instability of the oxygen-deficient SrTiO${}_3$ surface
• Correlation-Induced Band Competition in SrTiO3/LaAlO3
• Charge instabilities of the two-dimensional Hubbard model with attractive nearest neighbour interaction
• Conducting and insulating LaAlO${}_3$/SrTiO${}_3$ interfaces: A comparative surface photovoltage investigation
• Spectral properties of heterostructures containing half-metallic ferromagnets in the presence of local many-body correlations
• Influence of the vicinal substrate miscut on the anisotropic two-dimensional electronic transport in Al2O3-SrTiO3 heterostructures
• A two-dimensional electron gas at the (001) surface of ferromagnetic EuTiO${}_3$(001)