Abstract
We derive the renormalization-group equations describing all the short-range interactions in bilayer graphene allowed by symmetry, the long-range Coulomb interaction, and band-structure parameters. For certain range of parameters, we predict the first-order phase transition to the uniaxially deformed gapless state accompanied by the change in the topology of the electron spectrum.
- Received 3 November 2010
DOI:https://doi.org/10.1103/PhysRevB.82.201408
©2010 American Physical Society