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Observation of Landau levels of Dirac fermions in graphite
 

Summary: LETTERS
Observation of Landau levels of Dirac
fermions in graphite
GUOHONG LI AND EVA Y. ANDREI*
Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
*e-mail: eandrei@physics.rutgers.edu
Published online: 8 July 2007; doi:10.1038/nphys653
The unique electronic behaviour of monolayer and bilayer
graphene1,2
is a result of the unusual quantum-relativistic
characteristics of the so-called `Dirac fermions' (DFs) that carry
charge in these materials. Although DFs in monolayer graphene
move as if they were massless, and in bilayer graphene they
do so with non-zero mass, all DFs show chirality, which gives
rise to an unusual Landau level (LL) energy spectrum311
and
the observation of an anomalous quantum Hall effect in both
types of graphene4,5,8
. Here we report low-temperature scanning
tunnelling spectra of graphite subjected to a magnetic field of up

  

Source: Andrei, Eva Y. - Department of Physics and Astronomy, Rutgers University

 

Collections: Materials Science; Physics