Scanning Tunneling Microscopy of Defect States in the Semiconductor Bi${}_2$Se${}_3$

Abstract

Scanning tunneling spectroscopy images of Bi${}_2$Se${}_3$ doped with excess Bi reveal electronic defect states with a striking shape resembling clover leaves. With a simple tight-binding model we show that the geometry of the defect states in Bi${}_2$Se${}_3$ can be directly related to the position of the originating impurities. Only the Bi defects at the Se sites five atomic layers below the surface are experimentally observed. We show that this effect can be explained by the interplay of defect and surface electronic structure.

4 pages, 4 figures

Cited by in corpus (33)

• Experimental demonstration of the topological surface states protected by the time-reversal symmetry
• p-type Bi2Se3 for topological insulator and low temperature thermoelectric applications
• STM imaging of electronic waves on the surface of Bi${}_2$Te${}_3$: topologically protected surface states and hexagonal warping effects
• Landau Quantization of Massless Dirac Fermions in Topological Insulator
• Momentum-Resolved Landau-Level Spectroscopy of Dirac Surface State in Bi2Se3
• Topological insulator Bi2Se3 thin films grown on double-layer graphene by molecular beam epitaxy
• In-plane magnetic anisotropy of Fe atoms on Bi${}_2$Se${}_3$(111)
• Topological states in two-dimensional optical lattices
• Surface Scattering via Bulk Continuum States in the 3D Topological Insulator Bi${}_2$Se${}_3$
• STM imaging of impurity resonances on Bi${}_2$Se${}_3$
• Toward the intrinsic limit of topological insulator Bi2Se3
• Native Defects in Antiferromagnetic Topological Insulator MnBi${}_2$Te${}_4$
• Temperature driven phase transition at the antimonene/Bi2Se3 van der Waals heterostructure
• Local inhomogeneity and filamentary superconductivity in Pr-doped CaFe${}_2$As${}_2$
• Time reversal symmetry breaking superconductivity in topological materials
• Understanding Bulk Defects in Topological Insulators from Nuclear-Spin Interactions
• Solution to the hole-doping problem and tunable quantum Hall effect in Bi${}_2$Se${}_3$ thin films
• Probing the wavefunction of the surface states in Bi${}_2$Se${}_3$ topological insulator: a realistic tight-binding approach
• Induced spin texture in semiconductor/topological insulator heterostructures
• Intra- and Interband Electron Scattering in the Complex Hybrid Topological Insulator Bismuth Bilayer on Bi${}_2$Se${}_3$
• Scanning tunneling microscopy study of the CeTe3 charge density wave
• Co atoms on Bi${}_2$Se${}_3$ revealing a coverage dependent spin reorientation transition
• Screening and atomic-scale engineering of the potential at a topological insulator surface
• Spin-Polarized Quantum Well States on Bi${}_{2-x}$Fe${}_x$Se${}_3$
• The Interplay of Topological Surface and Bulk Electronic States in Bi2Se3
• Effect of surface defects and few-atomic steps on the local density of states of the atomically-clean surface of topological insulator Bi${}_2$Se${}_3$
• The Vertical Position of Sr Dopants in the Sr${}_x$Bi${}_2$Se${}_3$ Superconductor
• Spontaneous ferromagnetism and finite surface energy gap in the topological insulator Bi${}_2$Se${}_3$ from surface Bi$_\rm{Se}$ antisite defects
• Numerical analysis of surface and edge states in slabs, stripes, rods and surface steps of topological insulators
• Superconductivity induced by Ag intercalation in Dirac semimetal Bi${}_2$Se${}_3$
• Energy gap in tunneling spectroscopy: effect of the chemical potential shift
• Evidence for nitrogen gas surface doping of the Bi${}_2$Se${}_3$ topological insulator
• Commentary on the Interpretation of Fourier-Transform Scanning Tunneling Microscopy Data