J. Phys.: Condens. Matter 22, 425501 (2010)

SCI

Massless Dirac fermions in a graphene superlattice: a T -matrix approach

C Huy Pham, H Chau Nguyen and V Lien Nguyen

Using the T -matrix approach, we study the effect of a Kronig–Penney periodic potential on the electronic states and the transport properties of graphene. The energy band structure and the group velocity of charge carriers are calculated and discussed in detail for potentials with varying amplitudes and barrier-to-well width ratios. The periodic potential is shown to cause a resonant structure and to enhance the magnitude of the conductivity.