Quasi-2D anomalous Hall Mott insulator of topologically engineered Jeff =1/2 electrons
arXiv:2206.01392 · doi:10.1103/PhysRevX.12.031015
Abstract
We investigate an experimental toy-model system of a pseudospin-half square-lattice Hubbard Hamiltonian in [(SrIrO3)1/(CaTiO3)1] to include both nontrivial complex hopping and moderate electronic correlation. While the former induces electronic Berry phases as anticipated from the weak-coupling limit, the later stabilizes an antiferromagnetic (AFM) Mott insulator ground state in analogous to the strong-coupling limit. Their combined results in the real system are found to be an anomalous Hall effect with a non-monotonic temperature dependence due to the self-competition of the electron-hole pairing in the Mott state, and an exceptionally large Ising anisotropy that is captured as a giant magnon gap beyond the superexchange approach. The unusual phenomena highlight the rich interplay of electronic topology and electronic correlation in the intermediate-coupling regime that is largely unexplored and challenging in theoretical modelling.
arXiv commentAccepted by Phys. Rev. X
References in corpus (57)
- Topological Insulators
- Quantum Spin Hall Effect in Graphene
- Topological Order and the Quantum Spin Hall Effect
- Berry Phase Effects on Electronic Properties
- Anomalous Hall effect
- Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
- Correlated Electrons in High Temperature Superconductors
- Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
- Topological Insulator Materials
- Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4
- Quantum Spin Liquid States
- Correlated quantum phenomena in the strong spin-orbit regime
- Mott physics and band topology in materials with strong spin-orbit interaction
- Catalogue of Topological Electronic Materials
- Spin-Orbit Physics Giving Rise to Novel Phases in Correlated Systems: Iridates and Related Materials
- Topological Mott Insulators
- Spin Anisotropy and Quantum Hall Effect in the Kagome Lattice - Chiral Spin State based on a Ferromagnet-
- Bandwidth-Controlled Insulator-Metal Transition and Correlated Metallic State in 5 Transition Metal Oxides SrIrO (=1, 2, and )
- Quantum magnetism and criticality
- Isospin Dynamics in Sr2IrO4 : Forging Links to Cuprate Superconductivity
- Interface-driven topological Hall effect in SrRuO-SrIrO bilayer
- Twisted Hubbard Model for Sr2IrO4: Magnetism and Possible High Temperature Superconductivity
- Solutions of the Two Dimensional Hubbard Model: Benchmarks and Results from a Wide Range of Numerical Algorithms
- Theory of the field-induced gap in antiferromagnetic chains
- Correlation effects in two-dimensional topological insulators
- Engineering spin-orbital magnetic insulator by tailoring superlattices
- Microscopic study of spin-orbit-induced Mott insulator in Ir oxides
- The Challenge of Spin-Orbit-Tuned Ground States in Iridates
- Recent progress on correlated electron systems with strong spin-orbit coupling
- A hidden constant in the anomalous Hall effect of a high-purity magnet MnSi
- In-plane Magnetization Induced Quantum Anomalous Hall Effect
- Emerging magnetism and anomalous Hall effect in iridate-manganite heterostructures
- Excitonic quasiparticles in a spin-orbit Mott insulator
- Atomic-scale control of magnetic anisotropy via novel spin-orbit coupling effect in La2/3Sr1/3MnO3/SrIrO3 superlattices
- Giant Magnon Gap in Bilayer Iridate Sr3Ir2O7: Enhanced Pseudo-dipolar Interactions Near the Mott Transition
- Quantum Oscillations of Electrical Resistivity in an Insulator
- Dimensionality Driven Spin-Flop Transition in Layered Iridates
- Square Lattice Iridates
- Persistent paramagnons deep in the metallic phase of SrLaIrO
- Two-dimensional = 1/2 antiferromagnetic insulator unraveled from interlayer exchange coupling in artificial perovskite iridate superlattices
- Tuning Magnetic Coupling in SrIrO Thin Films with Epitaxial Strain
- Theory of magnetism and metal-insulator transition in layered perovskite iridates
- Emergent electric field control of phase transformation in oxide superlattices
- Topological order in a correlated three-dimensional topological insulator
- Spin-orbit-controlled metal-insulator transition in SrIrO
- Structural investigation of the bilayer iridate Sr3Ir2O7
- Unusual high-field metal in a Kondo insulator
- Anisotropic exchange and spin-wave damping in pure and electron-doped SrIrO
- Topological phases in Iridium oxide superlattices: quantized anomalous charge or valley Hall insulators
- Anisotropic softening of magnetic excitations in lightly electron doped SrIrO
- Decoupling carrier concentration and electron-phonon coupling in oxide heterostructures observed with resonant inelastic x-ray scattering
- Antiferromagnetic Excitonic Insulator State in Sr3Ir2O7
- Strain-modulated Slater-Mott crossover of pseudospin-half square-lattice in (SrIrO3)1/ (SrTiO3)1 superlattices
- Spin-gap and two-dimensional magnetic excitations in Sr2IrO4
- Anomalous Magnetoresistance due to Longitudinal Spin Fluctuations in a Jeff = 1/2 Mott Semiconductor
- Optical Signature of a Crossover from Mott- to Slater-type Gap in SrIrRhO
- Exciton condensation in bilayer spin-orbit insulator