Modulating the conductance in graphene nanoribbons with multi-barriers under an applied voltage

The electronic transmission and conductance of Dirac electrons in an armchair graphene nanoribbon under external voltage are investigated with the transfer matrix method. We investigate velocity nanoribbons presence single multiple barriers show that coefficients can be modulated by varying order mode, number carbon atoms, barrier velocities. In particular, we find appears to fully transparent when Fermi velocities equal. Our numerical results is sensitive applied which used tailor properties graphene-based devices.