Quasi-particle scattering and protected nature of topological states in a parent topological insulator Bi${}_2$Se${}_3$

Abstract

We report on angle resolved photoemission spectroscopic studies on a parent topological insulator (TI), Bi${}_2$Se${}_3$. The line width of the spectral function (inverse of the quasi-particle lifetime) of the topological metallic (TM) states shows an anomalous behavior. This behavior can be reasonably accounted for by assuming decay of the quasi-particles predominantly into bulk electronic states through electron-electron interaction and defect scattering. Studies on aged surfaces reveal that topological metallic states are very much unaffected by the potentials created by adsorbed atoms or molecules on the surface, indicating that topological states could be indeed protected against weak perturbations.

accepted for publication in Phys. Rev. B(R)

References in corpus (9)

• 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
• First observation of Spin-Momentum Helical Locking in Bi2Se3 and Bi2Te3, demonstration of Topological-Order at 300K and a realization of topological-transport-regime
• Topological Surface States Protected From Backscattering by Chiral Spin Texture
• Strong spin-orbit splitting on Bi surfaces
• Spin-orbit interaction effect in the electronic structure of \BiTe \ observed by angle-resolved photoemission spectroscopy
• Angle-resolved photoemission spectroscopy of electron-doped cuprate superconductors: Isotropic electron-phonon coupling
• Electron Removal Self Energy and its application to Ca2CuO2Cl2

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• Direct Evidence for the Dirac-Cone Topological Surface States in Ternary Chalcogenide TlBiSe2
• Wannier Center Sheets in Topological Insulators
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• Direct Measurement of the Out-of-Plane Spin Texture in the Dirac Cone Surface State of a Topological Insulator
• Two-dimensional surface charge transport in topological insulators
• Chiral orbital-angular-momentum in the surface states of Bi2Se3
• Transport in three-dimensional topological insulators: theory and experiment
• Spin-Polarized Tunneling Study on Spin-Momentum Locking in the Topological Insulators
• Sharp Raman Anomalies and Broken Adiabaticity at a Pressure Induced Transition from Band to Topological Insulator in Sb2Se3
• Stability of the Bi2Se3(111) topological state: electron-phonon and -defect scattering
• Ultrafast photodoping and effective Fermi-Dirac distribution of the Dirac particles in Bi2Se3
• Intrinsic conduction through topological surface states of insulating Bi${}_2$Te${}_3$ epitaxial thin films
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• Strong potential impurities on the surface of a topological insulator
• New interpretation of the origin of 2DEG states at the surface of layered topological insulators
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• Anomalous dressing of Dirac fermions in the topological surface state of Bi2Se3, Bi2Te3, and CuxBi2Se3
• Robust surface electronic properties of topological insulators: Bi2Te3 films grown by molecular beam epitaxy
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• Anisotropic effect of warping on the lifetime broadening of topological surface states in angle-resolved photoemission from Bi${}_2$Te${}_3$
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• Intrinsic Ultrathin Topological Insulators Grown via MBE Characterized by in-situ Angle Resolved Photoemission Spectroscopy
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• Spin-Polarized Quantum Well States on Bi${}_{2-x}$Fe${}_x$Se${}_3$
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