Tolerance of topological surface states towards magnetic moments: Fe on Bi2Te3 and Bi2Se3

Abstract

Topological insulators(1-8) are a novel form of matter which features metallic surface states with quasirelativistic dispersion similar to graphene(9). Unlike graphene, the locking of spin and momentum and the protection by time-reversal symmetry(1-8) open up tremendous additional possibilities for external control of transport properties(10-18). Here we show by angle-resolved photoelectron spectroscopy that the topological sur-face states of Bi2Te3 and Bi2Se3 are stable against the deposition of Fe without opening a band gap. This stability extends to low submonolayer coverages meaning that the band gap reported recently(19) for Fe on Bi2Se3 is incorrect as well as to complete monolayers meaning that topological surface states can very well exist at interfaces with ferromagnets in future devices.

10 pages, 3 figures, submitted to Nature Physics 22. July 2011

References in corpus (13)

• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Topological Insulators with Inversion Symmetry
• Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface
• A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
• Topological Field Theory of Time-Reversal Invariant Insulators
• Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase
• Three dimensional topological invariants for time reversal invariant Hamiltonians and the three dimensional quantum spin Hall effect
• Coexistence of the topological state and a two-dimensional electron gas on the surface of Bi2Se3
• The development of ferromagnetism in the doped topological insulator Bi2-xMnxTe3
• Ordering of magnetic impurities and tunable electronic properties of topological insulators
• In-plane magnetic anisotropy of Fe atoms on Bi${}_2$Se${}_3$(111)
• Photoemission induced gating of topological insulator
• High spin polarization and circular dichroism of topological surface states on Bi2Te3

Cited by in corpus (89)

• Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
• Dirac materials
• Electronic structure of quantum materials studied by angle-resolved photoemission spectroscopy
• Large magnetic gap at the Dirac point in a Mn-induced Bi${}_2$Te${}_3$ heterostructure
• Magnetic proximity effect at the 3D topological insulator/magnetic insulator interface
• In-plane magnetic anisotropy of Fe atoms on Bi${}_2$Se${}_3$(111)
• The Physics of Kondo Impurities in Graphene
• Nonmagnetic band gap at the Dirac point of the magnetic topological insulator (Bi${}_{1-x}$Mn${}_x{)}_2$Se${}_3$
• Controllable magnetic doping of the surface state of a topological insulator
• Reversal of the circular dichroism in the angle-resolved photoemission from Bi2Te3
• Dirac Spin-Orbit Torques at the Surface of Topological Insulators
• Signatures of Dirac fermion-mediated magnetic order
• 2D layered transport properties from topological insulator Bi${}_2$Se${}_3$ single crystals and micro flakes
• Dual nature of magnetic dopants and competing trends in topological insulators
• Exchange interaction and its tuning in magnetic binary chalcogenides
• Systematics of electronic and magnetic properties in the transition metal doped Sb${}_2$Te${}_3$ quantum anomalous Hall platform
• Filling of magnetic-impurity-induced gap in topological insulators by potential scattering
• RKKY Interaction On Surfaces of Topological Insulators With Superconducting Proximity Effect
• Spin Polarization of Gapped Dirac Surface States Near the Topological Phase Transition in TlBi(S1-xSex)2
• Spin- and angle-resolved photoemission on topological materials
• Observation of Distinct Bulk and Surface Chemical Environments in a Topological Insulator under Magnetic doping
• The topological surface state of $\alpha$-Sn on InSb(001) as studied by photoemission
• Strong out-of-plane magnetic anisotropy of Fe adatoms on Bi${}_2$Te${}_3$
• Ripple modulated electronic structure of a 3D topological insulator
• Topological phase transitions driven by magnetic phase transitions in FexBi2Te3 (0 < x < 0.1) single crystals
• Single Dirac-cone on the Cs-covered topological insulator surface Sb2Te3(0001)
• Intra- and Interband Electron Scattering in the Complex Hybrid Topological Insulator Bismuth Bilayer on Bi${}_2$Se${}_3$
• Response of the topological surface state to surface disorder in TlBiSe${}_2$
• Spin diffusion and magnetoresistance in ferromagnet/topological-insulator junctions
• Mass acquisition of Dirac fermions in Cr-doped topological insulator Sb2Te3 films
• Fluctuation-induced magnetization dynamics and criticality at the interface of a topological insulator with a magnetically ordered layer
• Approaching a Minimal Topological Electronic Structure in Antiferromagnetic Topological Insulator MnBi2Te4 via Surface Modification
• Surface States of a System of Dirac Fermions: A Minimal Model
• Trigger of the ubiquitous surface band bending in 3D topological insulators
• Experimental verification of the surface termination in the topological insulator TlBiSe${}_2$ using core-level photoelectron spectroscopy and scanning tunneling microscopy
• Magnetic-field-induced topological phase transition in Fe-doped (Bi,Sb)${}_2$Se${}_3$ heterostructures
• Anomalous behavior of the electronic structure of (Bi${}_{1-x}$In${}_x$)${}_2$Se${}_3$ across the quantum-phase transition from topological to trivial insulator
• Modeling Near-Surface Bound Electron States in Three-Dimensional Topological Insulator: Analytical and Numerical Approaches
• Electron spin dynamics of two-dimensional layered materials
• Non-magnetic ground state of Ni adatoms on Te-terminated bismuth chalcogenide topological insulators
• Distinct Effects of Cr Bulk Doping and Surface Deposition on the Chemical Environment and Electronic Structure of the Topological Insulator Bi2Se3
• Engineered Near-Perfect Back-Scattering on Surface of Topological Insulator with Non-Magnetic Impurities
• Sudden gap-closure across the topological phase transition in Bi${}_{2-x}$In${}_x$Se${}_3$
• A Molecular Approach for Engineering Interfacial Interactions in Magnetic-Topological Insulator Heterostructures
• Perpendicular magnetic anisotropy at Fe/Au(111) interface studied by Mössbauer, x-ray absorption, and photoemission spectroscopies
• Spontaneous gap generation on the surface of weakly interacting topological insulators using nonmagnetic impurities
• Spatial structure of correlations around a quantum impurity at the edge of a two-dimensional topological insulator
• Ferromagnetic MnSn monolayer epitaxially grown on silicon substrate
• Instability of the topological surface state in Bi${}_2$Se${}_3$ upon deposition of gold
• Step-edge assisted large scale FeSe monolayer growth on epitaxial Bi2Se3 thin films
• Spin-Polarized Quantum Well States on Bi${}_{2-x}$Fe${}_x$Se${}_3$
• Two-dimensional ferromagnetic extension of a topological insulator
• Growth, Morphology and Stability of Au in Contact with the Bi2Se3(0001) Surface
• Magnetism-induced massive Dirac spectra and topological defects in the surface state of Cr-doped Bi${}_2$Se${}_3$-bilayer topological insulators
• Angle-resolved and core-level photoemission study of interfacing the topological insulator Bi1.5Sb0.5Te1.7Se1.3 with Ag, Nb and Fe
• Kondo screening by the surface modes of a strong topological insulator
• Semi-metal-insulator transition on the surface of a topological insulator with in-plane magnetization
• Simultaneous Magnetic and Charge Doping of Topological Insulators with Carbon
• Large spin to charge conversion in topological superconductor \b{eta}-PdBi2 at room temperature
• Temperature Induced Spin Density Wave in Magnetic Doped Topological Insulators
• Low coverage surface diffusion in complex energy landscapes: Analytical solution and application to intercalation in topological insulators
• Spin-spin interaction in the bulk of topological insulators
• Appearance of flat surface bands in three-dimensional topological insulators in a ferromagnetic exchange field
• Robust Gapless Surface State against Surface Magnetic Impurities on (Bi${}_{0.5}$Sb${}_{0.5}$)${}_2$Te${}_3$ Evidenced by In Situ Magnetotransport Measurements
• Interplay between Mn-acceptor state and Dirac surface states in Mn-doped Bi${}_2$Se${}_3$ topological insulator
• Scattering properties of the three-dimensional topological insulator Sb2Te3: Coexistence of topologically trivial and non-trivial surface states with opposite spin-momentum helicity
• Spin-polarization of topological crystalline and normal insulator Pb${}_{1-x}$Sn${}_x$Se (111) epilayers probed by photoelectron spectroscopy
• Long-time relaxation dynamics of a spin coupled to a Chern insulator
• Ab initio investigation of impurity-induced in-gap states in Bi${}_2$Te${}_3$ and Bi${}_2$Se${}_3$
• Experimental demonstration of a magnetically induced warping transition in a topological insulator mediated by rare-earth surface dopants
• Gate field effects on the topological insulator BiSbTeSe2 interface
• Spontaneous ferromagnetism and finite surface energy gap in the topological insulator Bi${}_2$Se${}_3$ from surface Bi$_\rm{Se}$ antisite defects
• Resonance spin transfer torque in ferromagnetic/normal/ferromagnetic spin-valve structure of topological insulators
• Thermal screening at finite chemical potential on a topological surface and its interplay with proximity-induced ferromagnetism
• Spin Berry curvature of the Haldane model
• Topological insulator homojunctions including magnetic layers: the example of n-p type ($n$-QLs Bi${}_2$Se${}_3$/Mn-Bi${}_2$Se${}_3$) heterostructures
• Combined large spin-splitting and one dimensional confinement in surface alloys
• Induced Spin-texture at 3$d$ Transition Metal/Topological Insulator Interfaces
• Local moment formation and magnetic coupling of Mn guest atoms in Bi${}_2$Se${}_3$: a low-temperature ferromagnetic resonance study
• Large Magnetoresistance at Room Temperature in Ferromagnet/Topological Insulator Contacts
• Exchange and collective behavior of magnetic impurities in a disordered helical metal
• Magnetic Quantum Phase Diagram of Magnetic Impurities in 2 Dimensional Disordered Electron Systems
• Mössbauer parameters of ${}^{57}$Fe substituents in the topological insulator $B{i}_{2}S{e}_3$
• Coexistence of Rashba and Dirac dispersions on the surface of centrosymmetric topological insulator decorated with transition metals
• Interplay between surface Dirac and Rashba states specific for topologically nontrivial van der Waals superlattices
• Spin-polarized scanning tunneling microscopy measurement scheme for determining the quantum geometric tensor
• Tunable magnetic anisotropy from higher-harmonics exchange scattering on the surface of a topological insulator
• Band gap opening at the Dirac point in Co/BiSbTeSe2(0001) system
• Anisotropic magnetoresistance in topological insulator Bi1.5Sb0.5Te1.8Se1.2/CoFe heterostructures