title: Landau level spectroscopy of ultrathin graphite layers.
abstract: Far infrared transmission experiments are performed on ultrathin epitaxial graphite samples in a magnetic field. The observed cyclotron resonance-like and electron-positron-like transitions are in excellent agreement with the expectations of a single-particle model of Dirac fermions in graphene, with an effective velocity of c=1.03 x 10(6) m/s.
authors.affiliation: Grenoble High Magnetic Field Laboratory, CNRS, Grenoble, France.
authors.forename: M L
authors.initials: ML
authors.lastname: Sadowski
authors.forename: G
authors.initials: G
authors.lastname: Martinez
authors.forename: M
authors.initials: M
authors.lastname: Potemski
authors.forename: C
authors.initials: C
authors.lastname: Berger
authors.forename: W A
authors.initials: WA
authors.lastname: de Heer