Many-body effects and possible superconductivity in the 2D metallic surface states of 3D topological insulators

Abstract

We theoretically consider temperature and density-dependent electron-phonon interaction induced many-body effects in the two-dimensional (2D) metallic carriers confined on the surface of the 3D topological insulator (e.g. Bi${}_2$Se${}_3$). We calculate the temperature and the carrier density dependence of the real and imaginary parts of the electronic self-energy, the interacting spectral function, and the phonon-induced velocity renormalization, enabling us to obtain a simple density and temperature dependent effective dimensionless electron-phonon coupling constant parameter, which increases (decreases) strongly with increasing density (temperature). Our theoretical results can be directly and quantitatively compared with experimental ARPES or STS studies of the 2D spectral function of topological insulator surface carriers. In particular, we predict the possible existence of surface superconductivity in Bi${}_2$Se${}_3$ induced by strong electron-phonon interaction.

5 pages, 4 figures

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Cited by in corpus (32)

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• Electron-phonon interaction on the surface of a 3D topological insulator
• Weakly Interacting Topological Insulators: Quantum Criticality and Renormalization Group Approach
• Surface-to-bulk scattering in topological insulator films
• Weak Localization and Antilocalization in Topological Materials with Impurity Spin-Orbit Interactions
• Tunable interaction-induced localization of surface electrons in antidot nanostructured Bi2Te3 thin films
• Connecting electron and phonon spectroscopy data to consistently determine quasiparticle-phonon coupling on the surface of topological insulators
• A supervised learning algorithm for interacting topological insulators based on local curvature
• Magnetic properties of Type I and II Weyl Superconductors
• Quantum critical point in the superconducting transition on the surface of topological insulator
• Multiphoton excitation and high-harmonics generation in topological insulator
• Anomalous Hall Coulomb drag of massive Dirac fermions
• Type I superconductivity in Dirac materials
• Strong magnetic field induces superconductivity in Weyl semi - metal
• Coulomb drag in topological insulator films
• Phase diagram and phonon-induced backscattering in topological insulator nanowires
• Dielectric screening of surface states in a topological insulator
• Coulomb drag in topological materials
• Triplet superconductivity in 3D Dirac semimetal due to exchange interaction
• The anomalous spin texture as the probe for interactions in $B{i}_{2-y}S{b}_{y}S{e}_{x}T{e}_{3-x}$
• Nematic order on the surface of a three-dimensional topological insulator
• Upper magnetic field in superconducting Dirac semi-metal
• Electron-Phonon Coupling on the Surface of Topological Insulators
• Moiré surface states and enhanced superconductivity in topological insulators
• Chiral universality class of the normal-superconducting and the exciton condensation transition on the surface of topological insulator
• Pairing around a Single Dirac Point: A Unifying View of Kohn-Luttinger Superconductivity in Chern Bands, Quarter Metals, and Topological Surface States
• Fermi surface instabilities of symmetry-breaking and topological types on the surface of a three-dimensional topological insulator
• Surface topological quantum criticality: Conformal manifolds and Discrete Strong Coupling Fixed Points
• Magnetic impurities make superconductivity in 3D Dirac semi-metal triplet