1305.1780 (Tineke Stroucken et al.)

Screening and gap generation in bilayer graphene    [PDF]

Tineke Stroucken, Johanna H. Grönqvist, Stephan. W. Koch

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.

View original: http://arxiv.org/abs/1305.1780