Landau level spectroscopy of ultrathin graphite layers
arXiv:cond-mat/0605739 · doi:10.1103/PhysRevLett.97.266405
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.
4 pages 4 figures Slight revisions following referees' comments. One figure modified