Topological Magnetic Insulators with Corundum Structure

Abstract

Topological insulators are new states of quantum matter in which surface states residing in the bulk insulating gap are protected by time-reversal symmetry. When a proper kind of antiferromagnetic long range order is established in a topological insulator, the system supports axionic excitations. In this paper, we study theoretically the electronic states in a transition metal oxide of corundum structure, in which both spin-orbit interaction and electron-electron interaction play crucial roles. A tight-binding model analysis predicts that materials with this structure can be strong topological insulator. Because of the electron correlation, an antiferromagnetic order may develop, giving rise to a topological magnetic insulator phase with axionic excitations.

4.6 pages, 4 figures

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Cited by in corpus (34)

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• Competing Exotic Topological Insulator Phases in Transition Metal Oxides on the Pyrochlore Lattice with Distortion
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• Topological Quantum Phase Transition in 5$d$ Transition Metal Oxide Na${}_2$IrO${}_3$
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• Dynamical Axion Field in a Magnetic Topological Insulator Superlattice
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• Dynamical axion state with hidden pseudospin Chern numbers in MnBi${}_2$Te${}_4$-based heterostructures
• Antiferromagnetic Topological Nodal Line Semimetals
• Interplay between interaction and chiral anomaly: Anisotropy in the electrical resistivity of interacting Weyl metals
• Tunable dynamical magnetoelectric effect in antiferromagnetic topological insulator MnBi${}_2$Te${}_4$ films
• Topological Insulators and Quantum Spin Liquids
• Axion/Hidden-Photon Dark Matter Conversion into Condensed Matter Axion
• Axionic Antiferromagnetic Insulator Phase in a Correlated and Spin-Orbit Coupled System
• Electric-Field-Induced Spin Resonance in Antiferromagnetic Insulators: Inverse Process of the Dynamical Chiral Magnetic Effect
• Electromagnetic effects induced by time-dependent axion field
• Nonlinear level attraction of cavity axion polariton in antiferromagnetic topological insulator
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• Interaction Correction to the Magneto-Electric Polarizability of $Z_2$ Topological Insulators
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• Dirac topological insulator in the d${}_{z^2}$ manifold of a honeycomb oxide
• Hofstadter Butterflies in Topological Insulators