title: Strong interband Faraday rotation in 3D topological insulator Bi2Se3.
abstract: The Faraday effect is a representative magneto-optical phenomenon, resulting from the transfer of angular momentum between interacting light and matter in which time-reversal symmetry has been broken by an externally applied magnetic field. Here we report on the Faraday rotation induced in the prominent 3D topological insulator Bi2Se3 due to bulk interband excitations. The origin of this non-resonant effect, extraordinarily strong among other non-magnetic materials, is traced back to the specific Dirac-type Hamiltonian for Bi2Se3, which implies that electrons and holes in this material closely resemble relativistic particles with a non-zero rest mass.
authors.affiliation: Institute of Physics, Charles University, Ke Karlovu 5, CZ-121 16 Praha 2, Czech Republic.
authors.forename: L
authors.initials: L
authors.lastname: Ohnoutek
authors.affiliation: Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, 25, avenue des Martyrs, 38042 Grenoble, France.
authors.forename: M
authors.initials: M
authors.lastname: Hakl
authors.affiliation: Institute of Physics, Charles University, Ke Karlovu 5, CZ-121 16 Praha 2, Czech Republic.
authors.forename: M
authors.initials: M
authors.lastname: Veis
authors.affiliation: Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, 25, avenue des Martyrs, 38042 Grenoble, France.
authors.forename: B A
authors.initials: BA
authors.lastname: Piot
authors.affiliation: Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, 25, avenue des Martyrs, 38042 Grenoble, France.
authors.forename: C
authors.initials: C
authors.lastname: Faugeras
authors.affiliation: Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, 25, avenue des Martyrs, 38042 Grenoble, France.
authors.forename: G
authors.initials: G
authors.lastname: Martinez
authors.affiliation: Department of Physics, SUPA, Strathclyde University, G4 0NG Glasgow, UK.|Ural Federal University and Institute of Solid State Chemistry of RAS, Ekaterinburg, 620002, Russia.
authors.forename: M V
authors.initials: MV
authors.lastname: Yakushev
authors.affiliation: Department of Physics, SUPA, Strathclyde University, G4 0NG Glasgow, UK.
authors.forename: R W
authors.initials: RW
authors.lastname: Martin
authors.affiliation: Institute of Applied Physics and Mathematics, Faculty of Chemical Technology, University of Pardubice, Studentská 84, 532 10 Pardubice, Czech Republic.
authors.forename: Č
authors.initials: Č
authors.lastname: Drašar
authors.affiliation: Institute of Electronic Materials Technology, ul. Wolczynska 133, PL 01-919 Warsaw, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Materna
authors.affiliation: Institute of Electronic Materials Technology, ul. Wolczynska 133, PL 01-919 Warsaw, Poland.
authors.forename: G
authors.initials: G
authors.lastname: Strzelecka
authors.affiliation: Institute of Electronic Materials Technology, ul. Wolczynska 133, PL 01-919 Warsaw, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Hruban
authors.affiliation: Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, 25, avenue des Martyrs, 38042 Grenoble, France.
authors.forename: M
authors.initials: M
authors.lastname: Potemski
authors.affiliation: Institute of Physics, Charles University, Ke Karlovu 5, CZ-121 16 Praha 2, Czech Republic.|Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, 25, avenue des Martyrs, 38042 Grenoble, France.
authors.forename: M
authors.initials: M
authors.lastname: Orlita