Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2012-03-14
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages
Scientific paper
Rotated graphene multilayers form a new class of graphene related systems with electronic properties that drastically depend on the rotation angles. It has been shown that bilayers behave like two isolated graphene planes for large rotation angles. For smaller angles, states in the Dirac cones belonging to the two layers interact resulting in the appearance of two van Hove singularities. States become localised as the rotation angle decreases and the two van Hove singularities merge into one peak at the Dirac energy. Here we go further and consider bilayers with very small rotation angles. In this case, well defined regions of AA stacking exist in the bilayer supercell and we show that states are confined in these regions for energies in the [-\gamma_t, + \gamma_t] range with \gamma_t the interplane hopping integral. As a consequence, the local densities of states show discrete peaks for energies different from the Dirac energy.
de Laissardiere Guy Trambly
Magaud Laurence
Mayou Didier
No associations
LandOfFree
Rotated graphene bilayers: weak electronic coupling between the AA zones of large moires does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Rotated graphene bilayers: weak electronic coupling between the AA zones of large moires, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotated graphene bilayers: weak electronic coupling between the AA zones of large moires will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-716074