| Issue |
EPL
Volume 85, Number 5, March 2009
|
|
|---|---|---|
| Article Number | 58005 | |
| Number of page(s) | 5 | |
| Section | Interdisciplinary Physics and Related Areas of Science and Technology | |
| DOI | https://doi.org/10.1209/0295-5075/85/58005 | |
| Published online | 17 March 2009 | |
Electron-electron interactions in graphene bilayers
Department of Physics, Boston University - 590 Commonwealth Ave., Boston, MA 02215, USA
Received:
13
December
2008
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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