Article

Journal of Low Temperature Physics

, Volume 173, Issue 5, pp 264-281

First online:

Transport Properties for Triangular Barriers in Graphene Nanoribbon

  • Abderrahim El MouhafidAffiliated withTheoretical Physics Group, Faculty of Sciences, Chouaïb Doukkali University
  • , Ahmed JellalAffiliated withTheoretical Physics Group, Faculty of Sciences, Chouaïb Doukkali UniversitySaudi Center for Theoretical PhysicsPhysics Department, College of Sciences, King Faisal University Email author 

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Abstract

We theoretically study the electronic transport properties of Dirac fermions through one and double triangular barriers in graphene nanoribbon. Using the transfer matrix method, we determine the transmission, conductance and Fano factor. They are obtained to be various parameters dependent such as well width, barrier height and barrier width. Therefore, different discussions are given and comparison with the previous significant works is done. In particular, it is shown that at Dirac point the Dirac fermions always own a minimum conductance associated with a maximum Fano factor and change their behaviors in an oscillatory way (irregularly periodical tunneling peaks) when the potential of applied voltage is increased.

Keywords

Graphene Scattering Triangular potential Transmission