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

Theoretical Department, Institute of Physics, VAST, PO Box 429 Bo Ho, Hanoi 10000, Vietnam.
Journal of Physics Condensed Matter (Impact Factor: 2.22). 01/2009; 21(4):045305. DOI: 10.1088/0953-8984/21/4/045305
Source: PubMed

ABSTRACT 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.

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