Intrinsic magnetic topological insulators

Abstract

Introducing magnetism into topological insulators breaks time-reversal symmetry, and the magnetic exchange interaction can open a gap in the otherwise gapless topological surface states. This allows various novel topological quantum states to be generated, including the quantum anomalous Hall effect (QAHE) and axion insulator states. Magnetic doping and magnetic proximity are viewed as being useful means of exploring the interaction between topology and magnetism. However, the inhomogeneity of magnetic doping leads to complicated magnetic ordering and small exchange gaps, and consequently the observed QAHE appears only at ultralow temperatures. Therefore, intrinsic magnetic topological insulators are highly desired for increasing the QAHE working temperature and for investigating topological quantum phenomena further. The realization and characterization of such systems are essential for both fundamental physics and potential technical revolutions. This review summarizes recent research progress in intrinsic magnetic topological insulators, focusing mainly on the antiferromagnetic topological insulator MnBi2Te4 and its family of materials.

arXiv commentAccepted in principle at The Innovation

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• Instability in magnetic materials with dynamical axion field
• Quantum phase transition of chiral Majorana fermion in the presence of disorder
• Dynamical axion state with hidden pseudospin Chern numbers in MnBi${}_2$Te${}_4$-based heterostructures

Cited by in corpus (34)

• Colloquium: Quantum anomalous Hall effect
• Sample-dependent Dirac point gap in MnBi${}_2$Te${}_4$ and its response to the applied surface charge: a combined photoemission and ab initio study
• Routes to realize the axion-insulator phase in MnBi${}_2$Te${}_4$(Bi${}_2$Te${}_3$)${}_n$ family: a perspective
• Distinct magnetic gaps between antiferromagnetic and ferromagnetic orders driven by surface defects in the topological magnet MnBi2Te4
• Engineering magnetic topological insulators in Eu${}_5{M}_2{X}_6$ Zintls
• Magnetization-tuned topological quantum phase transition in MnBi2Te4 devices
• Magnetic-field modulation of topological electronic states and emergent magneto-transport in a magnetic Weyl semimetal
• Systemic Consequences of Disorder in Magnetically Self-Organized Topological MnBi${}_2$Te${}_4/$(Bi${}_2$Te${}_3$)${}_n$ Superlattices
• Ubiquitous order-disorder transition in the Mn antisite sublattice of the (MnBi${}_2$Te${}_4$)(Bi${}_2$Te${}_3$)${}_n$ magnetic topological insulators
• Charge Carrier Mediation and Ferromagnetism induced in MnBi6Te10 Magnetic Topological Insulators by antimony doping
• Quantum Anomalous Hall Effect in Perfectly Compensated Collinear Antiferromagnetic Thin Films
• Pressure-Driven Magneto-Topological Phase Transition in a magnetic Weyl semimetal
• Structure, physical properties, and magnetically tunable topological phases in topological semimetal EuCuBi
• The Layer Hall Effect without External Electric Field
• Antiferromagnetic Chern insulator in centrosymmetric systems
• Topological Magnetoelectric Response in Ferromagnetic Axion Insulators
• Surface state evolution induced by magnetic order in axion insulator candidate EuIn2As2
• Facet dependent surface energy gap on magnetic topological insulators
• Electric and magnetic fields tuned spin-polarized topological phases in two-dimensional ferromagnetic MnBi${}_4$Te${}_7$
• Dirac Fermions and Topological Phases in Magnetic Topological Insulator Films
• Low-energy modeling of three-dimensional topological insulator nanostructures
• Evidence of Weyl Fermion Enhanced Thermal Conductivity Under Magnetic Fields in Antiferromagnetic Topological Insulator Mn(Bi(1-x)Sb(x))2Te4
• Nonlinear chiral photocurrent in parity-violating magnetic Weyl semimetals
• Phononic dynamical axion in magnetic Dirac insulators
• The electronic structure of Mn${}_{1-x}$Pb${}_x$Bi${}_2$Te${}_4$: experimental evidence of topological phase transition
• Magneto-elastic coupling in a sinusoidal modulated magnet Cr${}_2$GaN
• Antiferromagnetic topological insulators in heavy-fermion systems
• Spin texture tunability in Mn${}_{1-x}$Ge${}_x$Bi${}_2$Te${}_4$ through varying Ge Concentration
• Optimizing proximitized magnetic topological insulator nanoribbons for Majorana bound states
• Crystalline electric field excitations in Weyl semimetal \textit{R}AlSi (\textit{R} = Ce, Pr and Nd)
• Magnetic Interactions and Cluster Formation: Boosting Surface Thermopower in Topological Insulators
• Probing domain wall dynamics in magnetic Weyl semimetals via the non-linear anomalous Hall effect
• Fate of surface gaps in magnetic topological insulators
• Bulk versus surface: Nonuniversal partitioning of the topological magnetoelectric effect