Quantum longitudinal and Hall transport at the LaAlO3/SrTiO3 interface at low electron densities

Abstract

We examined the magneto-transport behavior of electrons confined at the conducting LaAlO3/SrTiO3 interface in the low sheet carrier density regime. We observed well resolved Shubnikov-de Haas quantum oscillations in the longitudinal resistance, and a plateau-like structure in the Hall conductivity. The Landau indices of the plateaus in the Hall conductivity data show spacing close to 4, in units of the quantum of conductance. These experimental features can be explained by a magnetic breakdown transition, which quantitatively explains the area, structure, and degeneracy of the measured Fermi surface.

arXiv comment16 pages, 4 figures and 1 table

References in corpus (15)

• Tunable Rashba spin-orbit interaction at oxide interfaces
• Unveiling a two-dimensional electron gas with universal subbands at the surface of SrTiO3
• Creation and control of a two-dimensional electron liquid at the bare SrTiO3 surface
• A Universal Critical Density Underlying the Physics of Electrons at the LaAlO3/SrTiO3 Interface
• Two-dimensional quantum oscillations of the conductance at LaAlO3/SrTiO3 interfaces
• Electrolyte gate-controlled Kondo effect in SrTiO3
• Shubnikov-de Haas oscillations in SrTiO3\LaAlO3 interface
• Theory of the SrTiO3 Surface State Two-Dimensional Electron Gas
• Phase diagram of electrostatically doped Strontium Titanate (SrTiO3)
• Defect engineering in oxide heterostructures by enhanced oxygen surface exchange
• Two-dimensional electron liquid state at LaAlO3-SrTiO3 interfaces
• Shubnikov-de Haas effect in low electron density SrTiO3: Conduction band edge of SrTiO3 redux
• Low temperature metallic state induced by electrostatic carrier doping of SrTiO${}_3$
• Fermi surface and superconductivity in low-density high-mobility δ-doped SrTiO3
• Quantum oscillations from a two-dimensional electron gas at a Mott/band insulator interface

Cited by in corpus (20)

• Physics of SrTiO${}_3$-based heterostructures and nanostructures: a review
• Quantization of Hall Resistance at the Metallic Interface between an Oxide Insulator and SrTiO${}_3$
• A high-mobility electronic system at an electrolyte-gated oxide surface
• Liquid-Gated High Mobility and Quantum Oscillation of the Two-Dimensional Electron Gas at an Oxide Interface
• Dual-Gate Modulation of Carrier Density and Disorder in an Oxide Two-Dimensional Electron System
• Giant tunability of the two-dimensional electron gas at the interface of gamma-Al2O3/SrTiO3
• The Effect of Polar Fluctuation and Lattice Mismatch on Carrier Mobility at Oxide Interfaces
• Anisotropic transport at the LaAlO3/SrTiO3 interface explained by microscopic imaging of channel-flow over SrTiO3 domains
• Shubnikov-de Haas-like Quantum Oscillations in Artificial One-Dimensional LaAlO3/SrTiO3 Electron Channels
• Quasiparticle interference on cubic perovskite oxide surfaces
• High field magneto-transport in two-dimensional electron gas LaAlO3/SrTiO3
• Suppressed carrier density for the patterned high mobility two-dimensional electron gas at gamma-Al2O3/SrTiO3 heterointerfaces
• Large anomalous Nernst coefficient in an oxide Skyrmion crystal Chern insulator
• Effect of Sr-doping of LaMnO3 spacer on modulation-doped two-dimensional electron gases at oxide interfaces
• Quantum oscillations in 2D electron gases with spin-orbit and Zeeman interactions
• Quantum oscillations in an optically-illuminated two-dimensional electron system at the LaAlO${}_3$/SrTiO${}_3$ interface
• Unconventional quantum oscillations and evidence of nonparabolic electronic states in quasi-two-dimensional electron system at complex oxide interfaces
• Magnetotransport of a 2DEG with anisotropic Rashba interaction at the LaAlO${}_3$/SrTiO${}_3$ interface
• Electron Accumulation Layer in Ultrastrong Magnetic Field
• Signatures of symmetry-stabilized Dirac fermions in correlated oxide CaNbO3 thin films