Abstract
A fully self-consistent 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 ground state with a gap exceeding 10 meV is predicted.
Original language | English (US) |
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Article number | 245428 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 87 |
Issue number | 24 |
DOIs | |
State | Published - Jun 24 2013 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics