J. Phys.: Condens. Matter 21, 045305 (2009)

SCI

Tunneling of Dirac electrons through one-dimensional potentials in graphene: a T -matrix approach

H Chau Nguyen and V Lien Nguyen

The standard T -matrix method can be effectively used for studying the dynamics of Dirac electrons under one-dimensional potentials in graphene. The transmission probability expressed in terms of T -matrices and the corresponding ballistic current are derived for any smooth one-dimensional potential, taking into account the chirality of Dirac massless carriers. Numerical calculations are illustrated for the potential approximately describing graphene n–p junctions.