2014/12/04 by Teoman Ozturk, Teoman Öztürk, Richard L. Field +6 · 6 citations
Materials Science · Mathematics · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Condensed matter physics #Coulomb #Electron #Fermi surface #Graphene research and applications #Magnetic field #Magnetoresistance #Mathematics #Physics #Quantum mechanics #Spin (aerodynamics) #Spin polarization #Spin structure #Topological Materials and Phenomena #Topological insulator #Topology (electrical circuits) #cond-mat.mes-hall
paper · pdf · doi:10.1088/2399-6528/aa8cfb
published in Journal of Physics Communications 1(3), 035005 (IOP Publishing) · Corrected a typo in one of the author names
arxiv created 2014/12/04 · openalex created_date 2016/06/24 · openalex publication_date 2017/09/15 · arxiv updated 2020/02/12 · openalex updated_date 2026/08/06
In an ideal topological insulator, the helical spin structure of surface electrons suppresses backscattering and thus can enhance surface conductivity. In this study, we investigate the effect of perpendicular magnetic field on the spin structure of electrons at the Fermi energy and define a magnetic-field dependent topological enhancement factor using Boltzmann transport and calculate this factor for different disorder potentials, ranging from short-range disorder to screened Coulomb potential. Within the Boltzmann approximation, the topological enhancement factor reaches its maximum value of 4 for a short-range disorder at zero magnetic field and approaches a value of 1 at high magnetic fields. The topological enhancement factor becomes independent of the nature of the disorder potential at high magnetic fields.