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Ohnoutek L, Hakl M, Veis M, Piot BA, Faugeras C, Martinez G, Yakushev MV, Martin RW, Drašar Č, Materna A, Strzelecka G, Hruban A, Potemski M, Orlita M. Strong interband Faraday rotation in 3D topological insulator Bi2Se3. Sci Rep 2016; 6:19087. [PMID: 26750455 PMCID: PMC4707504 DOI: 10.1038/srep19087] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 12/02/2015] [Indexed: 11/26/2022] Open
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.
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Affiliation(s)
- L Ohnoutek
- Institute of Physics, Charles University, Ke Karlovu 5, CZ-121 16 Praha 2, Czech Republic
| | - M Hakl
- Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, 25, avenue des Martyrs, 38042 Grenoble, France
| | - M Veis
- Institute of Physics, Charles University, Ke Karlovu 5, CZ-121 16 Praha 2, Czech Republic
| | - B A Piot
- Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, 25, avenue des Martyrs, 38042 Grenoble, France
| | - C Faugeras
- Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, 25, avenue des Martyrs, 38042 Grenoble, France
| | - G Martinez
- Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, 25, avenue des Martyrs, 38042 Grenoble, France
| | - M V Yakushev
- Department of Physics, SUPA, Strathclyde University, G4 0NG Glasgow, UK.,Ural Federal University and Institute of Solid State Chemistry of RAS, Ekaterinburg, 620002, Russia
| | - R W Martin
- Department of Physics, SUPA, Strathclyde University, G4 0NG Glasgow, UK
| | - Č Drašar
- Institute of Applied Physics and Mathematics, Faculty of Chemical Technology, University of Pardubice, Studentská 84, 532 10 Pardubice, Czech Republic
| | - A Materna
- Institute of Electronic Materials Technology, ul. Wolczynska 133, PL 01-919 Warsaw, Poland
| | - G Strzelecka
- Institute of Electronic Materials Technology, ul. Wolczynska 133, PL 01-919 Warsaw, Poland
| | - A Hruban
- Institute of Electronic Materials Technology, ul. Wolczynska 133, PL 01-919 Warsaw, Poland
| | - M Potemski
- Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, 25, avenue des Martyrs, 38042 Grenoble, France
| | - M Orlita
- 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
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