Volume 85, Number 5, March 2009
|Number of page(s)||5|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||17 March 2009|
Electron-electron interactions in graphene bilayers
Department of Physics, Boston University - 590 Commonwealth Ave., Boston, MA 02215, USA
Accepted: 11 February 2009
We study the effect of electron-electron interactions in the quasiparticle dispersion of a graphene bilayer within the Hartree-Fock-Thomas-Fermi theory by using a four-bands model. We find that the electronic fluid can be described by a non-interacting–like dispersion but with renormalized parameters. We compare our results with recent cyclotron resonance experiments in this system.
PACS: 81.05.Uw – Carbon, diamond, graphite / 71.10.-w – Theories and models of many-electron systems / 51.35.+a – Mechanical properties; compressibility
© EPLA, 2009
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