“School of Physic”
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| Paper IPM / Physic / 11178 |
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| Abstract: | |||||
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We study the optical conductivity of a doped graphene
when a symmetry breaking of the sublattices is occurred in
the presence of electron-phonon interaction. Our study is based on the Kuba formula that is established upon the retarded self-energy.
We report new features of both the
real and imaginary parts of the quasiparticle self-energy in the presence of a gap opening.
We find an analytical expression for the renormalized Fermi
velocity of massive Dirac Fermions over broad
ranges of electron densities, gap values and the electron-phonon coupling constant.
Finally we conclude that the inclusion of the renormalized Fermi energy
and the band gap effects is indeed crucial to get reasonable feature for the optical conductivity.
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