Direct mapping of the spin-filtered surface bands of a three-dimensional quantum spin Hall insulator

Abstract

Spin-polarized band structure of the three-dimensional quantum spin Hall insulator $\mathrm{B}{\mathrm{i}}_{1-\mathrm{x}}\mathrm{S}{\mathrm{b}}_{\mathrm{x}}$ (x=0.12-0.13) was fully elucidated by spin-polarized angle-resolved photoemission spectroscopy using a high-yield spin polarimeter equipped with a high-resolution electron spectrometer. Between the two time-reversal-invariant points, $\bar{\Gamma }$ and $\bar{M}$, of the (111) surface Brillouin zone, a spin-up band (${\Sigma }_3$ band) was found to cross the Fermi energy only once, providing unambiguous evidence for the strong topological insulator phase. The observed spin-polarized band dispersions determine the "mirror chirality" to be -1, which agrees with the theoretical prediction based on first-principles calculations.

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Cited by in corpus (68)

• Topological Insulators
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• Crossover of Three-Dimensional Topological Insulator of Bi2Se3 to the Two-Dimensional Limit
• Topological Crystalline Insulators and Topological Superconductors: From Concepts to Materials
• Topological Superconductivity in CuxBi2Se3
• Topological Band Engineering of Graphene Nanoribbons
• Direct visualization of current induced spin accumulation in topological insulators
• A conductive topological insulator with colossal spin Hall effect for ultra-low power spin-orbit-torque switching
• Optimizing the Bi_(2-x)Sb_(x)Te_(3-y)Se_(y) solid solutions to approach the intrinsic topological insulator regime
• Momentum-Resolved Landau-Level Spectroscopy of Dirac Surface State in Bi2Se3
• Direct Evidence for the Dirac-Cone Topological Surface States in Ternary Chalcogenide TlBiSe2
• Angular-dependent oscillations of the magnetoresistance in Bi_2Se_3 due to the three-dimensional bulk Fermi surface
• Photoelectron spin-flipping and texture manipulation in a topological insulator
• Observation of inverse spin Hall effect in bismuth selenide
• Bilinear magneto-electric resistance as a probe of three-dimensional spin texture in topological surface states
• Electrical detection of the spin polarization due to charge flow in the surface state of the topological insulator Bi_1.5 Sb_0.5 Te_1.7 Se_1.3
• Electrochemical synthesis and superconducting phase diagram of Cu_xBi2Se3
• Fermi level tuning and a large activation gap achieved in the topological insulator Bi_{2}Te_{2}Se by Sn doping
• Topological insulators and fractional quantum Hall effect on the ruby lattice
• Widespread spin polarization effects in photoemission from topological insulators
• Gapless interface states between topological insulators with opposite Dirac velocities
• Experimental verification of PbBi${}_2$Te${}_4$ as a 3D topological insulator
• Surface Scattering via Bulk Continuum States in the 3D Topological Insulator Bi${}_2$Se${}_3$
• Magneto-optical and Magneto-electric Effects of Topological Insulators in Quantizing Magnetic Fields
• Spin-Polarized Surface Resonances Accompanying Topological Surface State Formation
• Oscillatory angular dependence of the magnetoresistance in a topological insulator Bi_{1-x}Sb_{x}
• Novel Spin-texture on the warped Dirac-cone surface states in topological insulators
• Direct Observation of the Topological Surface States in Lead-Based Ternary Telluride Pb(Bi1-xSbx)2Te4
• Observation of a Highly Spin Polarized Topological Surface State in GeBi${}_2$Te${}_4$
• Surface band structure of ${\text{Bi}}_{1-x}{\text{Sb}}_x$(111)
• Spin- and angle-resolved photoemission on topological materials
• Rotational Isotropy Breaking as Proof for Spin-polarized Cooper Pairs in the Topological Superconductor CuxBi2Se3
• Ambipolar transport in bulk crystals of a topological insulator by gating with ionic liquid
• Band dispersion of graphene with structural defects
• Ballistic geometric resistance resonances in a single surface of a topological insulator
• Topological Insulators and Quantum Spin Liquids
• Non-fragile superconductivity with nodes in the superconducting topological insulator CuxBi2Se3: Zeeman orbital field and non-magnetic impurities
• Three-dimensional topological insulators: A review on host materials
• Separating the bulk and surface n- to p-type transition in the topological insulator GeBi(4-x)SbxTe7
• Electromagnetic spin polarization on the surface of topological insulator
• Spin-polarized Majorana Bound States inside a Vortex Core in Topological Superconductors
• Interband absorption edge in topological insulators Bi${}_2$(Te${}_{1-x}$Se${}_x$)${}_3$
• Gate-controlled one-dimensional channel on the topological surface
• Unified description of Dirac electrons on a curved surface of topological insulators
• Light and microwave driven spin pumping across FeGaB-BiSb interface
• Triple point fermions in ferroelectric GeTe
• Terahertz Faraday and Kerr rotation spectroscopy of Bi${}_{1-x}$Sb${}_x$ films in high magnetic fields up to 30 Tesla
• Thermoelectric transport of perfectly conducting channels in two- and three-dimensional topological insulators
• Quasiclassical Treatment and Odd-parity/Triplet Correspondence in Topological Superconductors
• Field-angle-dependent low-energy excitations around a vortex in the superconducting topological insulator CuxBi2Se3
• Magneto-transport and Berry phase in magnetically doped Bi${}_{0.97-x}$Sb${}_{0.03}$ single crystals
• Robustness of Gapless Interface State in a Junction of Two Topological Insulators
• Analytical Solutions for the Surface States of Bi${}_{1-x}$Sb${}_x$ ($0\le x\lesssim 0.1$)
• Nuclear magnetic relaxation rates of unconventional superconductivity in doped topological insulators
• Topological insulator on honeycomb lattices and ribbons without inversion symmetry
• Electron transport in a ferromagnetic/normal/ferromagnetic tunnel junction based on the surface of a topological insulator
• Unusual temperature evolution of band structure of Bi(111) studied by angle-resolved photoemission spectroscopy and density functional theory
• From classical to quantum regime of topological surface states via defect engineering
• Superconductive proximity in a Topological Insulator slab and excitations bound to an axial vortex
• Ultrafast scattering dynamics of coherent phonons in Bi${}_{1-x}$Sb${}_x$ in the Weyl semimetal phase
• Topological blocking at the Bi(111) surface due to surface relaxation
• Additional Evidence for the Surface Origin of the Peculiar Angular-Dependent Magnetoresistance Oscillations Discovered in a Topological Insulator Bi_{1-x}Sb_{x}
• Anomalous Behaviour in the Magneto-Optics of a Gapped Topological Insulator
• Preparation and Characterization of High Quality Bi1-xSbx Thin Films: A Sputtering Deposition Approach
• Surface states around a vortex in topological superconductors: Intersection of a surface and a vortex
• Current Modulator based on Topological Insulator with Sliding Magnetic Superlattice