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cond-mat.mes-hall2008★ 93 cited
Finite-temperature Screening and the Specific Heat of Doped Graphene Sheets
M. R. Ramezanali, M. M. Vazifeh, Reza Asgari +2
At low energies, electrons in doped graphene sheets are described by a massless Dirac fermion Hamiltonian. In this work we present a semi-analytical expression for the dynamical de…
cond-mat.mes-hall2007★ 23 cited
Effect of disorder on the ground-state properties of graphene
R. Asgari, M. M. Vazifeh, M. R. Ramezanali +2
We calculate the ground-state energy of Dirac electrons in graphene in the presence of disorder. We take randomly distributed charged impurities at a fixed distance from the graphe…