• 文献标题:   Signature of electronic excitations in the Raman spectrum of graphene
  • 文献类型:   Article
  • 作  者:   KASHUBA O, FAL KO VI
  • 作者关键词:   graphene, landau level, raman spectra, semiconductor material
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   1098-0121 EI 1550-235X
  • 通讯作者地址:   Univ Lancaster
  • 被引频次:   34
  • DOI:   10.1103/PhysRevB.80.241404
  • 出版年:   2009

▎ 摘  要

Inelastic light scattering from Dirac-type electrons in graphene is shown to be dominated by the generation of the interband electronic modes which are odd in terms of time-inversion symmetry and belong to the irreducible representation A(2) of the point group C-6v of the honeycomb crystal. At high magnetic fields, these electron-hole excitations appear as peculiar n(-)-> n(+) inter-Landau-level modes with energies omega(n)=22nhv/lambda(B) and characteristically crossed polarization of in/out photons.