• 文献标题:   Magneto-Raman Scattering of Graphene on Graphite: Electronic and Phonon Excitations
  • 文献类型:   Article
  • 作  者:   FAUGERAS C, AMADO M, KOSSACKI P, ORLITA M, KUHNE M, NICOLET AAL, LATYSHEV YI, POTEMSKI M
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW LETTERS
  • ISSN:   0031-9007
  • 通讯作者地址:   CNRS UJF UPS INSA
  • 被引频次:   59
  • DOI:   10.1103/PhysRevLett.107.036807
  • 出版年:   2011

▎ 摘  要

Magneto-Raman-scattering experiments from the surface of graphite reveal novel features associated to purely electronic excitations which are observed in addition to phonon-mediated resonances. Graphene-like and graphite domains are identified through experiments with similar to 1 mu m spatial resolution performed in magnetic fields up to 32 T. Polarization resolved measurements emphasize the characteristic selection rules for electronic transitions in graphene. Graphene on graphite displays the unexpected hybridization between optical phonon and symmetric across the Dirac point inter Landau level transitions. The results open new experimental possibilities-to use light scattering methods in studies of graphene under quantum Hall effect conditions.