title: Filling-factor-dependent magnetophonon resonance in graphene.
abstract: We describe a peculiar fine structure acquired by the in-plane optical phonon at the Gamma point in graphene when it is brought into resonance with one of the inter-Landau-level transitions in this material. The effect is most pronounced when this lattice mode (associated with the G band in graphene Raman spectrum) is in resonance with inter-Landau-level transitions 0 --> +, 1 and -, 1 --> 0, at a magnetic field B{0} approximately 30 T. It can be used to measure the strength of the electron-phonon coupling directly, and its filling-factor dependence can be used experimentally to detect circularly polarized lattice vibrations.
authors.affiliation: Laboratoire de Physique des Solides, Université Paris-Sud, CNRS UMR 8502, F-91405, Orsay, France.
authors.forename: M O
authors.initials: MO
authors.lastname: Goerbig
authors.forename: J-N
authors.initials: JN
authors.lastname: Fuchs
authors.forename: K
authors.initials: K
authors.lastname: Kechedzhi
authors.forename: Vladimir I
authors.initials: VI
authors.lastname: Fal'ko
mesh_terms: D004583:Electrons; D006108:Graphite / Q000737:chemistry; D060739:Phonons; D013059:Spectrum Analysis, Raman; D014732:Vibration
chemical_list: D006108:Graphite