Electronic Structure of Multilayer Graphene

We study the electronic structure of multilayer graphene using a π-orbital continuum model with nearest-neighbor intralayer and interlayer tunneling. Using degenerate state perturbation theory, we show that the low-energy electronic structure of arbitrarily stacked graphene multilayers consists of chiral pseudospin doublets with a conserved chirality sum. The recent explosion1), 2) of research on the electronic properties of single layer and stacked multilayer graphene sheets has been driven by advances in material preparation methods, 3), 4) by the unusual5), 6), 7) electronic properties of these materials including unusual quantum Hall effects, 8), 9) and by hopes that these elegantly