Infrared magnetospectroscopy of graphite in tilted fields

0383907 - FZÚ 2013 RIV US eng J - Článek v odborném periodiku
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
Grant CEP: GA AV ČR KAN400100652
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: graphite * Landau levels * tilted magnetic fields
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 3.767, rok: 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.
Trvalý link: http://hdl.handle.net/11104/0213701