Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2007-06-20
Int.J.Mod.Phys.B21:4611-4658,2007
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
46 pages, ws-ijmpb, 7 EPS figures; final version published in IJMPB
Scientific paper
10.1142/S0217979207038022
We consider the relationship between the tight-binding Hamiltonian of the two-dimensional honeycomb lattice of carbon atoms with nearest neighbor hopping only and the 2+1 dimensional Hamiltonian of quantum electrodynamics which follows in the continuum limit. We pay particular attention to the symmetries of the free Dirac fermions including spatial inversion, time reversal, charge conjugation and chirality. We illustrate the power of such a mapping by considering the effect of the possible symmetry breaking which corresponds to the creation of a finite Dirac mass, on various optical properties. In particular, we consider the diagonal AC conductivity with emphasis on how the finite Dirac mass might manifest itself in experiment. The optical sum rules for the diagonal and Hall conductivities are discussed.
Carbotte Jules P.
Gusynin Valery P.
Sharapov Sergei G.
No associations
LandOfFree
AC conductivity of graphene: from tight-binding model to 2+1-dimensional quantum electrodynamics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with AC conductivity of graphene: from tight-binding model to 2+1-dimensional quantum electrodynamics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and AC conductivity of graphene: from tight-binding model to 2+1-dimensional quantum electrodynamics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-34624