Massive Dirac surface states in topological insulator/magnetic insulator heterostructures

Abstract

Topological insulators are new states of matter with a bulk gap and robust gapless surface states protected by time-reversal symmetry. When time-reversal symmetry is broken, the surface states are gapped, which induces a topological response of the system to electromagnetic field--the topological magnetoelectric effect. In this paper we study the behavior of topological surface states in heterostructures formed by a topological insulator and a magnetic insulator. Several magnetic insulators with compatible magnetic structure and relatively good lattice matching with topological insulators $\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{e}}_3,\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{e}}_3,\mathrm{S}{\mathrm{b}}_2\mathrm{T}{\mathrm{e}}_3$ are identified, and the best candidate material is found to be MnSe, an anti-ferromagnetic insulator. We perform first-principles calculation in $\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{e}}_3/MnSe$ superlattices and obtain the surface state bandstructure. The magnetic exchange coupling with MnSe induces a gap of $\sim$54 meV at the surface states. In addition we tune the distance between Mn ions and TI surface to study the distance dependence of the exchange coupling.

8 pages, 7 figures

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• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
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Cited by in corpus (71)

• Colloquium: Topological Band Theory
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• Chemical Aspects of the Antiferromagnetic Topological Insulator MnBi${}_2$Te${}_4$
• Tailoring Exchange Couplings in Magnetic Topological Insulator/Antiferromagnet Heterostructures
• Magnetic proximity effect at the 3D topological insulator/magnetic insulator interface
• Rare-earth mononitrides
• Tunable Line Node Semimetals
• Emerging Weak Localization Effects on Topological Insulator-Insulating Ferromagnet (Bi_2Se_3-EuS) Interface
• Large Anomalous Hall Effect in Topological Insulators with Proximitized Ferromagnetic Insulators
• Magnetize Topological Surface States of Bi2Se3 with a CrI3 Monolayer
• Proximity Driven Enhanced Magnetic Order at Ferromagnetic Insulator / Magnetic Topological Insulator Interface
• Enhancing Magnetic Ordering in Cr-doped Bi2Se3 using High-TC Ferrimagnetic Insulator
• Band structure and spin texture of Bi${}_2$Se${}_3$/3d ferromagnetic metal interface
• Proximity band structure and spin textures on both sides of topological-insulator/ferromagnetic-metal interface and their transport probes
• Loss of Hall Conductivity Quantization in a Non-Hermitian Quantum Anomalous Hall Insulator
• Efficient Charge-Spin Conversion and Magnetization Switching though Rashba Effect at Topological Insulator/Ag Interface
• Topological transitions induced by antiferromagnetism in a thin-film topological insulator
• Magnetic proximity effect in the 3D topological insulator/ferromagnetic insulator heterostructure
• Electronic structures and topological phases of magnetic layered materials MnBi2Te4, MnBi2Se4 and MnSb2Te4
• Resonant photovoltaic effect in doped magnetic semiconductors
• Magnetic Proximity Effect and Interlayer Exchange Coupling of Ferromagnetic/Topological Insulator/Ferromagnetic Trilayer
• Magnetic proximity effect at Bi${}_2$Se${}_3$/EuS interface with broken inversion symmetry
• Spin-Seebeck effect on the surface of topological insulator due to nonequilibrium spin-polarization parallel to the direction of thermally driven electronic transport
• Axion Insulator State in a Ferromagnet/Topological Insulator/Antiferromagnet Heterostructure
• Observation of Interfacial Antiferromagnetic Coupling between Magnetic Topological Insulator and Antiferromagnetic Insulator
• Dirac-Electrons-Mediated Magnetic Proximity Effect in Topological Insulator / Magnetic Insulator Heterostructures
• Spin Orbit Torque in two dimensional Antiferromagnetic Topological Insulators
• Spin diffusion and magnetoresistance in ferromagnet/topological-insulator junctions
• Do topology and ferromagnetism cooperate at the EuS/Bi${}_2$Se${}_3$ interface?
• Electronic properties of Bi${}_2$Se${}_3$ dopped by $3d$ transition metal (Mn, Fe, Co, or Ni) ions
• Severe Dirac Mass Gap Suppression in Sb_2Te_3-based Quantum Anomalous Hall Materials
• Engineering quantum anomalous Hall phases with orbital and spin degrees of freedom
• Realization of the Chern insulator and Axion insulator phases in antiferromagnetic $MnTe$-$B{i}_2(Se,Te{)}_3$-$MnTe$ heterostructures
• Magnetic-field-induced topological phase transition in Fe-doped (Bi,Sb)${}_2$Se${}_3$ heterostructures
• Elucidating proximity magnetism through polarized neutron reflectometry and machine learning
• Quantum Anomalous Hall Effect by Coupling Heavy Atomic Layers with CrI${}_3$
• Dynamics of domain-wall Dirac fermions on a topological insulator: a chiral fermion beam splitter
• A general route to form topologically-protected surface and bulk Dirac fermions along high-symmetry lines
• Controlling electron propagation on a topological insulator surface via proximity interactions
• Interface symmetry and spin control in topological insulator-semiconductor heterostructures
• Proximity Effects in Topological Insulator Heterostructures
• Pulsed Laser Deposition of High-Quality Thin Films of the Insulating Ferromagnet EuS
• Quantum Anomalous Hall Effect and Anderson Chern Insulating Regime in Noncollinear Antiferromagnetic 3Q State
• Topological Properties of SnSe/EuS and SnTe/CaTe Interfaces
• Semi-metal-insulator transition on the surface of a topological insulator with in-plane magnetization
• Spin transfer torques due to the bulk states of topological insulators
• Impurity effects and bandgap-closing in massive Dirac systems
• Topological Proximity Effects in Graphene Nanoribbon Heterostructures
• Novel magnetic topological insulator FeBi${}_2$Te${}_4$ with controllable topological quantum phase
• Weak de-localization in graphene on a ferromagnetic insulating film
• Dirac fermion wave guide networks on topological insulator surfaces
• Magnetic Proximity Effect in an Antiferromagnetic Insulator/Topological Insulator Heterostructure with Sharp Interface
• Chemical Migration and Dipole Formation at van der Waals Interfaces between Magnetic Transition Metal Chalcogenides and Topological Insulators
• Determination of the quantized topological magneto-electric effect in topological insulators from Rayleigh scattering
• Effect of surface hybridization on RKKY coupling in ferromagnet/topological insulator/ferromagnet trilayer system
• Thermal screening at finite chemical potential on a topological surface and its interplay with proximity-induced ferromagnetism
• Transport in Selectively Magnetically Doped Topological Insulator Wires
• Topological staggered field-electric effect with bipartite magnets
• Electromagnon on the Surface of Magnetic Topological Insulator
• Formation of bound states from the edge states of 2D topological insulator by macroscopic magnetic barriers
• The anomalous Hall Effect in a Magnetically Extended Topological Insulator Heterostructure
• AC anomalous Hall effect in topological insulator Josephson junctions
• Electrically Tunable Spin Exchange Splitting in Graphene Hybrid Heterostructure
• Enhanced and stable spin Hall conductivity in a disordered time-reversal and inversion symmetry broken topological insulator thin film
• Edge bands and vertical transport in topological insulator/magnetic insulator heterostructures
• Spin-polarized scanning tunneling microscopy measurement scheme for determining the quantum geometric tensor
• Strong photon coupling to high-frequency antiferromagnetic magnons via topological surface states
• Enhancement of Curie Temperature in Ferromagnetic Insulator-Topological Insulator Heterostructures
• Exact solutions for topological surface states of three-dimensional lattice models
• Phase equilibria in MnSb2Te4-GeSb2Te4 system and magnetic properties of Mn1-xGexSb2Te4 solid solutions