2011/08/11 by Hridis K. Pal, H. K. Pal, V. I. Yudson +2 · 1 citation
Materials Science · Mathematics · Physics and Astronomy · #Condensed matter physics #Electrical resistivity and conductivity #Electron #Fermi level #Fermi liquid theory #Fermi surface #Geometry #Graphene research and applications #Materials science #Mathematics #Physics #Quantum many-body systems #Quantum mechanics #Scattering #Superconductivity #Surface (topology) #Topological Materials and Phenomena #Topological insulator #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.85.085439
published as Phys. Rev. B 85, 085439 (2012) · 4 pages, 3 figures
arxiv created 2011/08/11 · openalex publication_date 2012/02/28 · arxiv updated 2016/03/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the effect of electron-electron interaction on the surface resistivity of three-dimensional (3D) topological insulators of the Bi2Te3 family. In the absence of umklapp scattering, the existence of the Fermi-liquid (T2) term in resistivity of a two-dimensional (2D) metal depends on the Fermi surface geometry, in particular, on whether it is convex or concave. On doping, the Fermi surface of 2D metallic surface states in 3D topological insulators of the Bi2Te3 family changes its shape from convex to concave due to hexagonal warping, while still being too small to allow for umklapp scattering. We show that the T2 term in the resistivity is present only in the concave regime and demonstrate that the resistivity obeys a universal scaling form valid for an arbitrary 2D Fermi surface near a convex-concave transition.