Ground-state properties of gapped graphene

@misc{citeulike:3032186, abstract = {We study the effect of band gap on the ground-state properties of Dirac electrons in a doped graphene within the random phase approximation at zero temperature. Band gap dependence of the exchange, correlation and ground-state energies and the compressibility are calculated. An energy minimum takes place in the region of small band gap due to slowly varying of the kinetic energy. We additionally show that the conductance in the gapped graphene is smaller than gapless one. We also calculate the band gap dependence of charge compressibility and it exhibits a maximum due to a competition between kinetic energy and Coulomb interactions.}, author = {Qaiumzadeh, A. and Asgari, R. }, citeulike-article-id = {3032186}, eprint = {0807.3138}, keywords = {dirac, graphene, rpa}, month = {Jul}, posted-at = {2008-07-22 09:56:04}, priority = {2}, title = {Ground-state properties of gapped graphene}, url = {http://arxiv.org/abs/0807.3138}, year = {2008} }

TY - ELEC ID - citeulike:3032186 L3 - citeulike-article-id:3032186 TI - Ground-state properties of gapped graphene N2 - We study the effect of band gap on the ground-state properties of Dirac electrons in a doped graphene within the random phase approximation at zero temperature. Band gap dependence of the exchange, correlation and ground-state energies and the compressibility are calculated. An energy minimum takes place in the region of small band gap due to slowly varying of the kinetic energy. We additionally show that the conductance in the gapped graphene is smaller than gapless one. We also calculate the band gap dependence of charge compressibility and it exhibits a maximum due to a competition between kinetic energy and Coulomb interactions. KW - dirac KW - graphene KW - rpa AU - Qaiumzadeh, A AU - Asgari, R PY - 2008/Jul/20/ UR - http://arxiv.org/abs/0807.3138 ER -