مشخصات پژوهش

The present paper investigates the tunneling time for bi-layer graphene with monolayer leads and monolayer graphene with a barrier for energy levels higher than the potential barrier. Numerical results reveal that parameters such as the incident energy and angle play a signifcant role in induction of the Hartman effect. Since bi-layer graphene has gaps, the Hartman effect occurs in the normal incidence case. Moreover, it is demonstrated that for energy levels above that of the barrier, the Hartman effect is also present.