Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2009-02-11
Phys. Rev. Lett. 102, 166403 (2009)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
3 figures
Scientific paper
10.1103/PhysRevLett.102.166403
Magnetotransport of natural graphite and highly oriented pyrolytic graphite (HOPG) has been measured at mK temperatures. Quantum oscillations for both electron and hole carriers are observed with orbital angular momentum quantum number up to $N\approx90$. A remarkable agreement is obtained when comparing the data and the predictions of the Slonczewski--Weiss--McClure tight binding model for massive fermions. No evidence for Dirac fermions is observed in the transport data which is dominated by the crossing of the Landau bands at the Fermi level, corresponding to $dE/dk_z=0$, which occurs away from the $H$ point where Dirac fermions are expected.
Maude Duncan K.
Orlita Milan
Potemski Marek
Schneider Jeanne M.
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