Interface engineering of quantum Hall effects in digital transition metal oxide heterostructures

Abstract

Topological insulators are characterized by a nontrivial band topology driven by the spin-orbit coupling. To fully explore the fundamental science and application of topological insulators, material realization is indispensable. Here we predict, based on tight-binding modeling and first-principles calculations, that bilayers of perovskite-type transition-metal oxides grown along the [111] crystallographic axis are potential candidates for two-dimensional topological insulators. The topological band structure of these materials can be fine-tuned by changing dopant ions, substrates, and external gate voltages. We predict that LaAuO${}_3$ bilayers have a topologically-nontrivial energy gap of about 0.15 eV, which is sufficiently large to realize the quantum spin-Hall effect at room temperature. Intriguing phenomena, such as fractional quantum Hall effect, associated with the nearly-flat topologically-nontrivial bands found in $e_g$ systems are also discussed.

Main text 11 pages with 4 figures and 1 table. Supplementary materials 4 pages with 2 figures

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• Signatures of Fractional Quantum Anomalous Hall States in Twisted MoTe2 Bilayer
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• Interacting topological insulators: a review
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• Photoferroelectric oxides
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• Emergent properties hidden in plane view: Strong electronic correlations at oxide interfaces
• Semimetal and Topological Insulator in Perovskite Iridates
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• Functionalized Germanene as a Prototype of Large-Gap Two-Dimensional Topological Insulators
• Interplay of Spin-Orbit Interactions, Dimensionality, and Octahedral Rotations in Semimetallic SrIrO${}_3$
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• Subband structure of a two-dimensional electron gas formed at the polar surface of the strong spin-orbit perovskite KTaO${}_3$
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• Emergence of a Chern-insulating state from a semi-Dirac dispersion
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• Band structure engineering of ideal fractional Chern insulators
• Bose-Einstein Condensates in Spin-Orbit Coupled Optical Lattices: Flat Bands and Superfluidity
• Massive symmetry breaking in LaAlO${}_3$/SrTiO${}_3$(111) quantum wells: a three-orbital, strongly correlated generalization of graphene
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• Direct observation of the Dirac nodes lifting in semimetallic perovskite SrIrO3 thin films
• Emerging chiral edge states from the confinement of a magnetic Weyl semimetal in Co${}_3$Sn${}_2$S${}_2$
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• Topology and Interactions in a Frustrated Slab: Tuning from Weyl Semimetals to C > 1 Fractional Chern Insulators
• Strain-induced nonsymmorphic symmetry breaking and removal of Dirac semimetallic nodal line in an orthoperovskite iridate
• Two-dimensional superconductivity at the (111)LaAlO${}_3$/SrTiO${}_3$ interface
• Orientational tuning of the Fermi sea of confined electrons at the SrTiO3 (110) and (111) surfaces
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• Electronic structure of (LaNiO${}_3$)${}_2$/(LaAlO${}_3$)${}_N$ heterostructures grown along [111]
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• Designing light-element materials with large effective spin-orbit coupling
• Doped Mott Insulators in (111) Bilayers of Perovskite Transition-Metal Oxides with a Strong Spin-Orbit Coupling
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• Charge transfer in iridate-manganite superlattices
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• Classification of phases for mixed states via fast dissipative evolution
• Integer and Fractional Quantum Hall Effect in a Strip of Stripes
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• Symmetry protected fractional Chern insulators and fractional topological insulators
• Epitaxial growth of (111)-oriented LaAlO${}_3$/LaNiO${}_3$ ultra-thin superlattices
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• Perspective: Strongly correlated and topological states in [111] grown transition metal oxide thin films and heterostructures
• Tailoring the Phase Transition and Electron-Phonon Coupling in 1T'-MoTe2 by Charge Doping: A Raman Study
• Dispersive Magnetic and Electronic Excitations in Iridate Perovskites Probed with Oxygen $K$-Edge Resonant Inelastic X-ray Scattering
• Topological phases in Iridium oxide superlattices: quantized anomalous charge or valley Hall insulators
• Bulk-edge correspondence in fractional Chern insulators
• Ab initio study of $Z_2$ topological phases in perovskite (111) $({\text{SrTiO}}_3{)}_7/({\text{SrIrO}}_3{)}_2$ and $({\text{KTaO}}_3{)}_7/({\text{KPtO}}_3{)}_2$ multilayers
• Multiple Dirac Cones and Topological Magnetism in Honeycomb-Monolayer Transition Metal Trichalcogenides
• Topological magnetic phase in LaMnO${}_3$ (111) bilayer
• Design of Mott and topological phases on buckled 3d-oxide honeycomb lattices
• Giant switchable Rashba effect in oxide heterostructures
• Chiral spin density wave, spin-charge-Chern liquid and d+id superconductivity in 1/4-doped correlated electronic systems on the honeycomb lattice
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• Two-dimensional topological superconductivity with antiferromagnetic insulators
• Topological nodal line semimetals in holography
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• Designer Topological Insulators in Superlattices
• Quantum response theory for open systems and its application to Hall conductance
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• Structural properties and anisotropic electronic transport in SrIrO3 films
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• Interaction driven quantum phase transition in fractional quantum spin Hall effects
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• Topological phase transition in MoTe${}_2$: A Review
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• Topological bands in two-dimensional orbital-active bipartite lattices
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• Strain and onsite-correlation tunable quantum anomalous Hall phases in ferromagnetic (111) LaXO${}_3$ bilayers (X$=$Pd, Pt)
• Emergent Haldane Model and Photon-Valley Locking in Chiral Cavities
• Anomalous ferromagnetism and magneto-optical Kerr effect in semiconducting double perovskite Ba2NiOsO6 and its (111) (Ba2NiOsO6)/(BaTiO3)10 superlattice
• Electronic structure of a graphene-like artificial crystal of $NdNi{O}_3$
• Isostructural Metal-Insulator Transition Driven by Dimensional-Crossover in SrIrO3 Heterostructures
• Electronic structure of buried LaNiO3 layers in (111)-oriented LaNiO3/LaMnO3 superlattices probed by soft x-ray ARPES
• Ab initio study of nontrivial topological phases in corundum structured $($M${}_2$O${}_3)/($Al${}_2$O${}_3{)}_5$ multilayers
• Strain-induced topological phase transition at (111) SrTiO${}_3$-based heterostructures
• Flux-flow instability across Berezinskii Kosterlitz Thouless phase transition in KTaO${}_3$ (111) based superconductor
• Topological Phase Transition Coupled with Spin-Valley Physics in Ferroelectric Oxide Heterostructures
• Magnetism and berry phase manipulation in an emergent structure of perovskite ruthenate by (111) strain engineering
• Finite-temperature phase diagram of (111) nickelate bilayers
• Quantum anomalous Hall effect with field-tunable Chern number near Z2 topological critical point
• Two-dimensional topological order of kinetically constrained quantum particles
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• Anisotropic Magnetoresistance in Multiband Systems: 2DEGs and Polar Metals at Oxide Interfaces
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• Effective theory of fractional topological insulators in two spatial dimensions
• Octahedral coupling in (111)- and (001)-oriented La${}_{2/3}$Sr${}_{1/3}$MnO${}_3$/SrTiO${}_3$ heterostructures
• Suppression of twinning and enhanced electronic anisotropy of SrIrO3 films
• Magnetism and electronic structure of ($001$)- and ($111$)-oriented LaTiO${}_3$ bilayers sandwiched in LaScO${}_3$ barriers
• Pattern formation in the dipolar Ising model on a two-dimensional honeycomb lattice
• Magnetotransport of SrIrO3 films on (110) DyScO3
• Electronic and magnetic properties of epitaxial SrRhO3 films
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• Possible high temperature odd parity superconductivity in LaNi${}_{7/8}$Co${}_{1/8}$O${}_3$ (111) bilayers
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• A comparative DMFT study of the eg-orbital Hubbard model in thin films
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• Stacking sensitive topological phases in a bilayer Kane-Mele-Hubbard model at quarter filling
• Anomalous fractional quantum Hall effect and multi-valued Hamiltonians
• Low temperature magnetoresistance of (111) (La${}_{0.3}$Sr${}_{0.7}$)(Al${}_{0.65}$Ta${}_{0.35}$)/SrTiO${}_3$
• Effect of confinement and Coulomb interactions on the electronic structure of (111) LaAlO${}_3$/SrTiO${}_3$ interface
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• Strong spin-orbit coupling and magnetism in (111) (La${}_{0.3}$Sr${}_{0.7}$)(Al${}_{0.65}$Ta${}_{0.35})$/SrTiO${}_3$
• Dirac-like fermions anomalous magneto-transport in a spin-polarized oxide two-dimensional electron system
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• Dirac topological insulator in the d${}_{z^2}$ manifold of a honeycomb oxide
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• Design of Chern Insulating Phases in Honeycomb Lattices
• First Principles Prediction of Topological Phases in Thin Films of Pyrochlore Iridates
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