4 - Electronic transport in bilayer graphene

Abstract

Electronic transport in bilayer graphene is studied in this chapter, and the fundamental physics and conceptual issues are described. A model Hamiltonian system is described as well as the method for inducing an energy band gap in the system. The transport properties investigated include conductance in a p-n junction, the self-consistent Born approximation, and RKKY (Ruderman-Kittel-Kasuya-Yosida) interactions in biased bilayer graphene. Studies on suspended bilayer graphene and on new-generation bilayer graphene samples on SiC are described, and the role of many-body effects in these systems is explored. The collective modes in the symmetry and asymmetry charge density channels are discussed, and use of the effective mass as an essential quantity in quasiparticle theories is examined. The charge compressibility in bilayer graphene is studied in depth.