Screening and gap generation in bilayer graphene
Mesoscale and Nanoscale Physics
2013-06-27 v1 Materials Science
Abstract
A fully selfconsistent treatment for gap generation and Coulomb screening in excitonic insulators is presented. The method is based on the equations of motion for the relevant dynamical variables combined with a variational approach. Applying the theory for a model system of bilayer graphene, an excitonic groundstate with a gap exceeding 10 meV is predicted.
Keywords
Cite
@article{arxiv.1305.1780,
title = {Screening and gap generation in bilayer graphene},
author = {Tineke Stroucken and Johanna H. Grönqvist and Stephan. W. Koch},
journal= {arXiv preprint arXiv:1305.1780},
year = {2013}
}
Comments
15 pages, 5 figures