Magneto-transmission as a probe of Dirac fermions in bulk graphite

M. Orlita; C. Faugeras; G. Martinez; D. K. Maude; M. L. Sadowski; J. M. Schneider; M. Potemski

doi:10.1088/0953-8984/20/45/454223

Magneto-transmission as a probe of Dirac fermions in bulk graphite

Other Condensed Matter 2008-10-23 v1

Authors: M. Orlita , C. Faugeras , G. Martinez , D. K. Maude , M. L. Sadowski , J. M. Schneider , M. Potemski

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Abstract

Far infrared magneto-transmission spectroscopy has been used to probe "relativistic" fermions in highly oriented pyrolytic and natural graphite. Nearly identical transmission spectra of those two materials are obtained, giving the signature of Dirac fermions via absorption lines with an energy that scales as \sqrt{B}. The Fermi velocity is evaluated to be c*=1.02x10^6 m/s and the pseudogap at the H point is estimated to be below 10 meV.

Keywords

magneto-transmission spectroscopy Dirac fermions bulk graphite highly oriented pyrolytic graphite Fermi velocity pseudogap

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@article{arxiv.0805.0553,
  title  = {Magneto-transmission as a probe of Dirac fermions in bulk graphite},
  author = {M. Orlita and C. Faugeras and G. Martinez and D. K. Maude and M. L. Sadowski and J. M. Schneider and M. Potemski},
  journal= {arXiv preprint arXiv:0805.0553},
  year   = {2008}
}

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6 pages, 3 figures

Magneto-transmission as a probe of Dirac fermions in bulk graphite

Abstract

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