Observation of magnetophonon resonance of Dirac fermions in graphite.

@article{Yan2010ObservationOM,
  title={Observation of magnetophonon resonance of Dirac fermions in graphite.},
  author={Jun Biao Yan and Sarah Goler and Trevor D Rhone and Melinda Y. Han and Rui Xiu He and Philip Kim and Vittorio Pellegrini and Aron Pinczuk},
  journal={Physical review letters},
  year={2010},
  volume={105 22},
  pages={227401}
}
Coherent coupling of Dirac fermion magnetoexcitons with an optical phonon is observed in graphite as marked magnetic-field dependent splittings and anticrossing behavior of the two coupled modes. The sharp magnetophonon resonance occurs in regions of the graphite sample with properties of superior single-layer graphene having enhanced lifetimes of Dirac fermions. The greatly reduced carrier broadening to values below the graphene electron-phonon coupling constant explains the appearance of… CONTINUE READING

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