ABSTRACT
Graphene is a monolayer graphite sheet recently fabricated [1-3]
and has been attracting attention theoretically and experimentally
since the observation of the integer quantum Hall effect [4, 5].
Several reviews have already been published [6-9]. Actually,
graphene has been a subject of study prior to the experimental
realization because of the peculiar electronic structure responsible
for intriguing properties of carbon nanotubes [10] and because of
theoretical interest in special properties of systems in relativistic
limit. The purpose of this chapter is to give a brief review on
electronic properties of graphenes mainly from a theoretical point
of view. The topics include effective-mass description of electronic
states, transport and optical properties, and phonons and their
interaction with electrons.
