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Infrared magnetospectroscopy of graphite in tilted fields

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    0383907 - FZÚ 2013 RIV US eng J - Journal Article
    Goncharuk, Natalya - Nádvorník, Lukáš - Faugeras, C. - Orlita, M. - Smrčka, Ludvík
    Infrared magnetospectroscopy of graphite in tilted fields.
    Physical Review. B. Roč. 86, č. 15 (2012), "155409-1"-"155409-6". ISSN 1098-0121
    R&D Projects: GA AV ČR KAN400100652
    Institutional research plan: CEZ:AV0Z10100521
    Keywords : graphite * Landau levels * tilted magnetic fields
    Subject RIV: BM - Solid Matter Physics ; Magnetism
    Impact factor: 3.767, year: 2012

    The electronic structure of Bernal-stacked graphite subjected to tilted magnetic fields has been investigated using infrared magnetotransmission experiments. With the increasing in-plane component of the magnetic field B-parallel to, we observe significant broadening and partially also splitting of interband inter-Landau-level transitions, which originate at the H point of the graphite Brillouin zone, where the charge carriers behave as massless Dirac fermions. The observed behavior is attributed to the lifting of the twofold degeneracy of Landau levels at the H point-a degeneracy which in graphite complements the standard spin and valley degeneracies typical of graphene.
    Permanent Link: http://hdl.handle.net/11104/0213701

     
     
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