Gapless surface Dirac cone in antiferromagnetic topological insulator MnBi${}_2$Te${}_4$

Abstract

The recent discovered antiferromagnetic topological insulators in Mn-Bi-Te family with intrinsic magnetic ordering have rapidly drawn broad interest since its cleaved surface state is believed to be gapped, hosting the unprecedented axion states with half-integer quantum Hall effect. Here, however, we show unambiguously by using high-resolution angle-resolved photoemission spectroscopy that a gapless Dirac cone at the (0001) surface of MnBi${}_2$Te${}_4$ exists between the bulk band gap. Such unexpected surface state remains unchanged across the bulk Néel temperature, and is even robust against severe surface degradation, indicating additional topological protection. Through symmetry analysis and $\text{ab}$-$\text{initio}$ calculations we consider different types of surface reconstruction of the magnetic moments as possible origins giving rise to such linear dispersion. Our results reveal that the intrinsic magnetic topological insulator hosts a rich platform to realize various topological phases such as topological crystalline insulator and time-reversal-preserved topological insulator, by tuning the magnetic configurations.

arXiv comment9 pages, 4 figures. To appear in Phys. Rev. X. See Version 1 for the supplementary file

References in corpus (40)

• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• Maximally-localized generalized Wannier functions for composite energy bands
• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• Topological Field Theory of Time-Reversal Invariant Insulators
• WannierTools: An open-source software package for novel topological materials
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• Intrinsic magnetic topological insulators in van der Waals layered MnBi${}_2$Te${}_4$-family materials
• High-precision realization of robust quantum anomalous Hall state in a hard ferromagnetic topological insulator
• Topological axion states in magnetic insulator MnBi${}_2$Te${}_4$ with the quantized magnetoelectric effect
• Higher-Order Topology in Bismuth
• Hexagonal Warping Effects in the Surface States of Topological Insulator Bi${}_2$Te${}_3$
• Experimental realization of an intrinsic magnetic topological insulator
• Trajectory of Anomalous Hall Effect toward the Quantized State in a Ferromagnetic Topological Insulator
• Antiferromagnetic topological insulators
• Unique thickness-dependent properties of the van der Waals interlayer antiferromagnet $\mathrm{MnB}{\mathrm{i}}_2\mathrm{T}{\mathrm{e}}_4$ films
• Scale-Invariant Dissipationless Chiral Transport in Magnetic Topological Insulators beyond the Two-Dimensional Limit
• Magnetic impurities on the surface of a topological insulator
• Fractional Chern Insulator
• A topological insulator surface under strong Coulomb, magnetic and disorder perturbations
• Bulk Topological Invariants in Noninteracting Point Group Symmetric Insulators
• Hedgehog Spin-texture and Berry's Phase tuning in a Magnetic Topological Insulator
• Realization of the Axion Insulator State in Quantum Anomalous Hall Sandwich Heterostructures
• Crystal growth and magnetic structure of MnBi2Te4
• Topological Electronic Structure and Its Temperature Evolution in Antiferromagnetic Topological Insulator MnBi2Te4
• Intrinsic magnetic topological insulator phases in the Sb doped MnBi2Te4 bulks and thin flakes
• Dirac surface states in intrinsic magnetic topological insulators EuSn2As2 and MnBi2nTe3n+1
• Chemical Aspects of the Antiferromagnetic Topological Insulator MnBi${}_2$Te${}_4$
• Spin scattering and noncollinear spin structure-induced intrinsic anomalous Hall effect in antiferromagnetic topological insulator $\mathrm{MnB}{\mathrm{i}}_2\mathrm{T}{\mathrm{e}}_4$
• Electrically controllable surface magnetism on the surface of topological insulator
• Highly-ordered wide bandgap materials for quantized anomalous Hall and magnetoelectric effects
• Persistence of Topological Order and Formation of Quantum Well States in Topological Insulators Bi2(Se,Te)3 under Ambient Conditions
• Evolution of structural, magnetic and transport properties in MnBi2-xSbxTe4
• Surface states and Rashba-type spin polarization in antiferromagnetic MnBi${}_2$Te${}_4$
• Rational design principles of quantum anomalous Hall effect from superlattice-like magnetic topological insulators
• Magnetically Controllable Topological Quantum Phase Transitions in Antiferromagnetic Topological Insulator MnBi${}_2$Te${}_4$
• Surface magnetic ordering in topological insulators with bulk magnetic dopants
• Quasiparticle Dynamics in Reshaped Helical Dirac Cone of Topological Insulators
• One-Dimensional Edge States with Giant Spin Splitting in a Bismuth Thin Film
• On the matter of topological insulators as magnetoelectrics
• Topological magnetic crystalline insulators and co-representation theory

Cited by in corpus (166)

• Magnetic-field-induced quantized anomalous Hall effect in intrinsic magnetic topological insulator MnBi${}_2$Te${}_4$
• Electronic structure of quantum materials studied by angle-resolved photoemission spectroscopy
• Colloquium: Quantum anomalous Hall effect
• Topological Electronic Structure and Its Temperature Evolution in Antiferromagnetic Topological Insulator MnBi2Te4
• Dirac surface states in intrinsic magnetic topological insulators EuSn2As2 and MnBi2nTe3n+1
• A van der Waals antiferromagnetic topological insulator with weak interlayer magnetic coupling
• Axion Electrodynamics in Topological Materials
• Möbius Insulator and Higher-Order Topology in MnBi${}_{2n}$Te${}_{3n+1}$
• Gapless Dirac surface states in the antiferromagnetic topological insulator MnBi2Te4
• Realization of an intrinsic, ferromagnetic topological state in MnBi8Te13
• Competing magnetic interactions in the antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• A-type Antiferromagnetic order in MnBi4Te7 and MnBi6Te10 single crystals
• Site Mixing for Engineering Magnetic Topological Insulators
• Crystal and magnetic structures of magnetic topological insulators MnBi${}_2$Te${}_4$ and MnBi${}_4$Te${}_7$
• Electronic states and magnetic response of MnBi2Te4 by scanning tunneling microscopy and spectroscopy
• Dirac Fermions in Antiferromagnetic FeSn Kagome Lattices with Combined Space Inversion and Time Reversal Symmetry
• Robust A-type order and spin-flop transition on the surface of the antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• Coexistence of Surface Ferromagnetism and Gapless Topological State in MnBi${}_2$Te${}_4$
• Topological Semimetal Nanostructures: From Properties to Topotronics
• Even-Odd Layer-Dependent Anomalous Hall Effect in Topological Magnet MnBi2Te4 Thin Films
• Intrinsic axion insulating behavior in antiferromagnetic MnBi${}_6$Te${}_{10}$
• Magnetic topological insulator MnBi6Te10 with zero-field ferromagnetic state and gapped Dirac surface states
• Half-Magnetic Topological Insulator
• In-plane antiferromagnetic moments in axion topological insulator candidate EuIn${}_2$As${}_2$
• Flat Chern Band From Twisted Bilayer MnBi${}_2$Te${}_4$
• 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
• Layer Hall effect induced by hidden Berry curvature in antiferromagnetic insulators
• Distinct Topological Surface States on the Two Terminations of MnBi${}_4$Te${}_7$
• Universal gapless Dirac cone and tunable topological states in (MnBi${}_2$Te${}_4$)${}_m$(Bi${}_2$Te${}_3$)${}_n$ heterostructures
• Native Defects in Antiferromagnetic Topological Insulator MnBi${}_2$Te${}_4$
• Magnetized Topological Insulator Multilayers
• Topological magnetic materials of the (MnSb${}_2$Te${}_4$)$\cdot$(Sb${}_2$Te${}_3$)${}_n$ van der Waals compounds family
• Pressure-induced Topological and Structural Phase Transitions in an Antiferromagnetic Topological Insulator
• Tunable interlayer magnetism and band topology in van der Waals heterostructures of MnBi2Te4-family materials
• Orbital Complexity in Intrinsic Magnetic Topological Insulators MnBi${}_4$Te${}_7$ and MnBi${}_6$Te${}_{10}$
• Vortex and Surface Phase Transitions in Superconducting Higher-order Topological Insulators
• Evolution of Magnetic Interactions in Sb-substituted MnBi2Te4
• Temperature Dependent Electronic Structure in a Higher Order Topological Insulator Candidate EuIn${}_2$As${}_2$
• Analytical solution for the surface states of antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• Multiple magnetic topological phases in bulk van der Waals crystal MnSb4Te7
• Magnetic Properties and Electronic Structure of Magnetic Topological Insulator MnBi${}_2$Se${}_4$
• Using nonlocal surface transport to identify the axion insulator
• Tuning the magnetism and band topology through antisite defects in Sb doped MnBi4Te7
• Routes to realize the axion-insulator phase in MnBi${}_2$Te${}_4$(Bi${}_2$Te${}_3$)${}_n$ family: a perspective
• Intrinsic quantum anomalous Hall phase induced by proximity in germanene/Cr${}_2$Ge${}_2$Te${}_6$ van der Waals heterostructure
• Origins of electronic bands in antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• Pressure-tuned intralayer exchange in superlattice-like MnBi2Te4/(Bi2Te3)n topological insulators
• Coexisting of Quantum Hall and Quantum Anomalous Hall phases in Disordered $\mathrm{MnB}{\mathrm{i}}_2\mathrm{T}{\mathrm{e}}_4$
• Signature of band inversion in the antiferromagnetic phase of axion insulator candidate EuIn2As2
• Distinct magnetic gaps between antiferromagnetic and ferromagnetic orders driven by surface defects in the topological magnet MnBi2Te4
• Hybridization-Induced Gapped and Gapless States on the Surfaces of Magnetic Topological Insulators
• Intrinsic topological phases in Mn${}_2$Bi${}_2$Te${}_5$ tuned by the layer magnetization
• Spectroscopic realization of large surface gap in a doped magnetic topological insulator
• Mapping the Dirac fermions in intrinsic antiferromagnetic topological insulators (MnBi${}_2$Te${}_4$)(Bi${}_2$Te${}_3$)${}_n$ (n=0, 1)
• Realizing gapped surface states in magnetic topological insulator MnBi${}_{2-x}$Sb${}_x$Te${}_4$
• Critical Behavior and Universal Signature of an Axion Insulator State
• Large Exchange Bias Effect and Coverage-Dependent Interfacial Coupling in CrI3/MnBi2Te4 van der Waals Heterostructures
• Visualizing the interplay of Dirac mass gap and magnetism at nanoscale in intrinsic magnetic topological insulators
• Floquet engineering of magnetic topological insulator MnBi${}_2$Te${}_4$ films
• Domain wall induced spin-polarized flat bands in antiferromagnetic topological insulators
• Growth, characterization and Chern insulator state in MnBi${}_2$Te${}_4$ via the chemical vapor transport method
• Adsorption-controlled growth of MnTe(Bi2Te3)n by molecular beam epitaxy exhibiting stoichiometry-controlled magnetism
• Coexistence of Ferromagnetism and Topology by Charge Carrier Engineering in intrinsic magnetic topological insulator MnBi4Te7
• Unusual Magnetic Properties in Layered Magnetic Topological Insulator EuSn2As2
• Local manifestations of thickness dependent topology and axion edge state in topological magnet MnBi${}_2$Te${}_4$
• Delicate Ferromagnetism in MnBi${}_6$Te${}_{10}$
• Recent advancements in the study of intrinsic magnetic topological insulators and magnetic Weyl semimetals
• Controllable chirality and band gap of quantum anomalous Hall insulators
• Approaching a Minimal Topological Electronic Structure in Antiferromagnetic Topological Insulator MnBi2Te4 via Surface Modification
• Two-dimensional ferromagnetism with long-range interactions in the layered magnetic topological insulator MnBi2Te4
• Strongly anisotropic spin dynamics in magnetic topological insulators
• Nonreciprocal transport in a bilayer of MnBi2Te4 and Pt
• Hinged Quantum Spin-Hall Effect in Antiferromagnetic Topological Insulators
• Quantum Oscillations in the Field-induced Ferromagnetic State of MnBi${}_{2-x}$Sb${}_x$Te${}_4$
• Detection of magnetic gap in the topological surface states of MnBi2Te4
• Chern Number Tunable Quantum Anomalous Hall Effect in Compensated Antiferromagnets
• Gate-Tunable Quantum Anomalous Hall Effects in MnBi${}_2$Te${}_4$ Thin Films
• Metamagnetism of few layer topological antiferromagnets
• Infrared study of the multiband low-energy excitations of the topological antiferromagnet MnBi${}_2$Te${}_4$
• Evolution of the electronic structure of ultrathin MnBi2Te4 Films
• Topological surface states of MnBi${}_2$Te${}_4$ at finite temperatures and at domain walls
• Surface-induced linear magnetoresistance in antiferromagnetic topological insulator MnBi2Te4
• Thermal and thermoelectric properties of an antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• On the topological surface states of the intrinsic magnetic topological insulator Mn-Bi-Te family
• Chiral channel network from magnetization textures in 2D MnBi2Te4
• Observation of magnetism induced topological edge state in antiferromagnetic topological insulator MnBi4Te7
• Anomalous Second Harmonic Generation from Atomically Thin MnBi2Te4
• Dynamical properties of magnetic topological insulator $T$Bi${}_2$Te${}_4$ ($T=$Mn, Fe): phonons dispersion, Raman active modes, and chiral phonons study
• Critical role of magnetic moments in heavy-fermion materials: revisiting mysteries of SmB${}_6$
• Ferroelectrically switchable magnetic multistates in MnBi${}_2$Te${}_4$(Bi${}_2$Te${}_3$)${}_n$ and MnSb${}_2$Te${}_4$(Sb${}_2$Te${}_3$)${}_n$ (n = 0, 1) thin films
• Microscopic probe of magnetic polarons in antiferromagnetic Eu${}_5$In${}_2$Sb${}_6$
• Layer Zero-Line Modes in Antiferromagnetic Topological Insulators
• Influences of the dissipative topological edge state on quantized transport in MnBi2Te4
• Nonlinear level attraction of cavity axion polariton in antiferromagnetic topological insulator
• Koopmans' theorem as the mechanism of nearly gapless surface states in self-doped magnetic topological insulators
• Magnetic skyrmion crystal at a topological insulator surface
• Effect on the Electronic and Magnetic Properties of Antiferromagnetic Topological Insulator MnBi${}_2$Te${}_4$ with Sn Doping
• Direct visualization of surface spin-flip transition in MnBi4Te7
• Charge Carrier Mediation and Ferromagnetism induced in MnBi6Te10 Magnetic Topological Insulators by antimony doping
• Magnetic warping in topological insulators
• Spectral features of magnetic domain walls on surface of 3D topological insulators
• Antiferromagnetic topological insulator with selectively gapped Dirac cones
• Glide-symmetric topological crystalline insulator phase in a nonprimitive lattice
• Highly Tunable Band Inversion in AB2X4 (A=Ge, Sn, Pb; B=As, Sb, Bi; X=Se, Te) Compounds
• Group theory study of the vibrational modes and magnetic order in the topological antiferromagnet MnBi${}_2$Te${}_4$
• Axionic surface wave in dynamical axion insulators
• Topological Electronic Structure Evolution with Symmetry Breaking Spin Reorientation in (Fe${}_{1-x}$Co${}_x$)Sn
• Quantum Anomalous Hall Effect in Perfectly Compensated Collinear Antiferromagnetic Thin Films
• Two-dimensional ferromagnetic extension of a topological insulator
• Mechanism of carrier doping induced magnetic phase transitions in two-dimensional materials
• Momentum-inversion symmetry breaking on the Fermi surface of magnetic topological insulators
• Influence of magnetic ordering on the optical response of the antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• Interacting topological mirror excitonic insulator in one dimension
• Antiferromagnetic Chern insulator in centrosymmetric systems
• Unusual dynamic susceptibility arising from soft ferromagnetic domains in MnBi8Te13 and Sb-doped MnBi2nTe3n+1 (n=2, 3)
• Unusual surface states associated with the PT-symmetry breaking and antiferromagnetic band folding in NdSb
• Magnetic topological transistor exploiting layer-selective transport
• Van der Waals engineering of ultrafast carrier dynamics in magnetic heterostructures
• Intrinsic ferromagnetic axion states and a single pair of Weyl fermions in the stable-state Mn\emph{X}${}_2$\emph{B}${}_2$\emph{T}${}_6$-family materials
• A Dirac-fermion approach and its application to design high Chern numbers in magnetic topological insulator multilayers
• Infrared study of the interplay of charge, spin, and lattice excitations in the magnetic topological insulator EuIn${}_2$As${}_2$
• Facet dependent surface energy gap on magnetic topological insulators
• Correlation between magnetic domain structures and quantum anomalous Hall effect in epitaxial MnBi2Te4 thin films
• Unveiling quasiparticle dynamics of topological insulators through Bayesian modelling
• Disorder- and Topology-Enhanced Fully Spin-Polarized Currents in Nodal Chain Spin-Gapless Semimetals
• Toward improved property prediction of 2D materials using many-body quantum Monte Carlo methods
• Development of a Laser-based angle-resolved-photoemission spectrometer with sub-micrometer spatial resolution and high-efficiency spin detection
• Absence of a Dirac gap in ferromagnetic Cr${}_x$(Bi${}_{0.1}$Sb${}_{0.9}$)${}_{2-x}$Te${}_3$
• Intrinsic ferromagnetic and antiferromagnetic axion insulators in van der Waals materials Mn\emph{X}${}_2$\emph{B}${}_2$\emph{T}${}_6$ family
• Intermediate anomalous Hall states induced by noncollinear spin structure in magnetic topological insulator MnBi2Te4
• Magneto-Transport and High-Resolution Angle-Resolved Photoelectron Spectroscopy Studies of Palladium Doped Bi${}_2$Te${}_3$
• Spontaneous ferromagnetism and finite surface energy gap in the topological insulator Bi${}_2$Se${}_3$ from surface Bi$_\rm{Se}$ antisite defects
• Axion mass in antiferromagnetic insulators
• Symmetry-driven anisotropic coupling effect in antiferromagnetic topological insulator: Mechanism for high-Chern-number quantum anomalous Hall state
• Large-gap quantum anomalous Hall states induced by functionalizing buckled Bi-III monolayer/Al${}_2$O${}_3$
• Modulation of Dirac electrons in epitaxial Bi2Se3 ultrathin films on van-der-Waals ferromagnet Cr2Si2Te6
• Magnetically tunable Shubnikov-de Hass oscillations in MnBi2Te4
• Intrinsic antiferromagnetic topological insulator and axion state in V2WS4
• Distinguishing Surface and Bulk Electromagnetism via Their Dynamics in an Intrinsic Magnetic Topological Insulator
• Evidence of Weyl Fermion Enhanced Thermal Conductivity Under Magnetic Fields in Antiferromagnetic Topological Insulator Mn(Bi(1-x)Sb(x))2Te4
• Interplay between exchange split Dirac and Rashba-type surface states in MnBi${}_2$Te${}_4$/BiTeI interface
• Stealth Majorana Zero Mode in a Trilayer Heterostructure MnTe/Bi2Te3/Fe(Te,Se)
• Topological Descendants of Multicritical EuTl2
• Electrically tunable high-Chern-number quasiflat bands in twisted antiferromagnetic topological insulators
• Interfacing Quantum Spin Hall and Quantum Anomalous Hall insulators: Bi bilayer on MnBi${}_2$Te${}_4$-family materials
• Optical study of the charge dynamics evolution in the topological insulators MnBi${}_2$Te${}_4$ and Mn(Bi${}_{0.74}$Sb${}_{0.26}$)${}_2$Te${}_4$ under high pressure
• Topology-insensitive axion mass in magnetic topological insulators
• The electronic structure of Mn${}_{1-x}$Pb${}_x$Bi${}_2$Te${}_4$: experimental evidence of topological phase transition
• Quantum Anomalous Hall Effect in Three-dimensional Topological Insulator/Thin-film Ferromagnetic Metal Bilayer Structure
• Unoccupied Topological Surface State in MnBi${}_2$Te${}_4$
• Reconstructing the wavefunction of magnetic topological insulators MnBi2Te4 and MnBi4Te7 using spin-resolved photoemission
• Broadband photoresponse enhancement by band engineering in Sb-doped MnBi2Te4
• Antiferromagnetic topological insulators in heavy-fermion systems
• Magneto-optical Kerr and Faraday effects in bilayer antiferromagnetic insulators
• Spin texture tunability in Mn${}_{1-x}$Ge${}_x$Bi${}_2$Te${}_4$ through varying Ge Concentration
• Fate of surface gaps in magnetic topological insulators
• Relationship among Structural, Disordered, Magnetism and Band Topology in MnSb2Te4(Sb2Te3)n Family
• Conductance oscillations of antiferromagnetic layer tunnel junctions
• Resonantly enhanced photoemission from topological surface states in MnBi${}_6$Te${}_{10}$
• Hedgehog-like spin texture in Sb-doped MnBi${}_2$Te${}_4$
• Tuning the Topological Properties of the Antiferromagnetic V(Bi${}_{1-x}$Sb${}_x$)${}_2$Te${}_4$ via Sb concentration
• Magnetic-Field Tunable Möbius and Higher-Order Topological Insulators in Three-Dimensional Layered Octagonal Quasicrystals
• Research on topological materials using ultrafast spectroscopy
• High-Temperature Quantum Anomalous Hall Effect in Buckled Honeycomb Antiferromagnets
• Defect-induced displacement of topological surface state in quantum magnet MnBi${}_2$Te${}_4$
• Simple model for the gap in the surface states of the antiferromagnetic topological insulator MnBi${}_2$Te${}_4$