Bulk Band Structure of Bi${}_2$Te${}_3$

Abstract

The bulk band structure of Bi${}_2$Te${}_3$ has been determined by angle-resolved photoemission spectroscopy and compared to first-principles calculations. We have performed calculations using the local density approximation (LDA) of density functional theory and the one-shot $GW$ approximation within the all-electron full-potential linearized augmented-plane-wave (FLAPW) formalism, fully taking into account spin-orbit coupling. Quasiparticle effects produce significant changes in the band structure of \bite~when compared to LDA. Experimental and calculated results are compared in the spectral regions where distinct differences between the LDA and $GW$ results are present. Overall a superior agreement with $GW$ is found, highlighting the importance of many-body effects in the band structure of this family of topological insulators.

arXiv comment8 pages, 5 Figures

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• QS$G\hat{W}$: Quasiparticle Self consistent $GW$ with ladder diagrams in $W$
• Electron-Phonon Coupling and Surface Debye Temperature of Bi${}_2$Te${}_3$(111) from Helium Atom Scattering
• Origin of the Electron-Phonon Interaction of Topological Semimetal Surfaces Measured with Helium Atom Scattering
• Nanoscale Surface Dynamics of Bi${}_2$Te${}_3$(111): Observation of a Prominent Surface Acoustic Wave and the Role of van der Waals Interactions
• Interband absorption edge in topological insulators Bi${}_2$(Te${}_{1-x}$Se${}_x$)${}_3$
• Observation of Planar Hall Effect in Topological Insulator -- Bi${}_2$Te${}_3$
• THz Surface Modes and Electron-Phonon Coupling in Bi${}_2$Se${}_3$(111)
• Electronic properties of Bi${}_2$Se${}_3$ dopped by $3d$ transition metal (Mn, Fe, Co, or Ni) ions
• Landau level spectroscopy of Bi${}_2$Te${}_3$
• Strong interband Faraday rotation in 3D topological insulator Bi2Se3
• Importance of van der Waals interactions for ab initio studies of topological insulators
• Non-magnetic ground state of Ni adatoms on Te-terminated bismuth chalcogenide topological insulators
• Observation of antiphase coherent phonons in the warped Dirac cone of Bi${}_2$Te${}_3$
• Bulk and surface electronic structure of Bi${}_4$Te${}_3$ from $GW$ calculations and photoemission experiments
• A Helium-Surface Interaction Potential of Bi${}_2$Te${}_3$(111) from Ultrahigh-Resolution Spin-Echo Measurements
• Ab-initio Theory of Fourier-transformed Quasiparticle Interference Maps and Application to the Topological Insulator Bi${}_2$Te${}_3$
• Stacking-configuration-enriched essential properties in bilayer silicenes
• Electronic Structure of Fe${}_{1.08}$Te bulk crystals and epitaxial FeTe thin films on Bi${}_2$Te${}_3$
• Spin dynamics of $3d$ and $4d$ impurities embedded in prototypical topological insulators
• Magneto-Transport and High-Resolution Angle-Resolved Photoelectron Spectroscopy Studies of Palladium Doped Bi${}_2$Te${}_3$
• Bulk band structure of Sb${}_2$Te${}_3$ determined by angle-resolved photoemission spectroscopy
• Electronic structure and thermoelectric properties of CoAsSb with post-DFT approaches
• Control of intervalley scattering in Bi${}_2$Te${}_3$ via temperature-dependent band renormalization
• Long-range permeation of wave function and superficial surface state due to strong quantum size effects in topological Bi/BiSb heterojunctions