Theory of bulk-surface coupling in topological insulator films

2014/09/26 by Kush Saha, Ion Garate · 38 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Asymmetry #Condensed matter physics #Coupling (piping) #Graphene research and applications #Insulator (electricity) #Materials science #Optics #Optoelectronics #Physics #Quantum mechanics #Scattering #Surface (topology) #Surface states #Topological Materials and Phenomena #Topological insulator #cond-mat.mes-hall #cond-mat.mtrl-sci #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.90.245418

published in Physical Review B 90(24) (American Physical Society) · 5 pages+appendices, 8 figures

arxiv created 2014/09/26 · openalex publication_date 2014/12/11 · arxiv updated 2015/01/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present a quantitative microscopic theory of the disorder- and phonon-induced coupling between surface and bulk states in doped topological insulator films. We find a simple mathematical structure for the surface-to-bulk scattering matrix elements and confirm the importance of bulk-surface coupling in transport and photoemission experiments, assessing its dependence on temperature, carrier density, film thickness, and particle-hole asymmetry.

Citations

• Topological phases and the quantum spin Hall effect in three dimensions
• Topological insulators and superconductors
• The birth of topological insulators
• Fingerprints of Inelastic Transport at the Surface of the Topological InsulatorBi2Se3: Role of Electron-Phonon Coupling
• Topological Insulators
• Effective continuous model for surface states and thin films of three-dimensional topological insulators
• Electrically tunable surface-to-bulk coherent coupling in topological insulator thin films