Screening and gap generation in bilayer graphene
arXiv:1305.1780 · doi:10.1103/PhysRevB.87.245428
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.
15 pages, 5 figures
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- Photonics in Flatland: Challenges and Opportunities for Nanophotonics with 2D Semiconductors
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- Particle-hole pair states of layered materials
- Optical amplification in a CDW-phase of a quasi-two dimensional material