Figure 3
From: Tuning the Fermi velocity in Dirac materials with an electric field
(a) Fermi velocity for a metallic aGNR as a function of the normalized field F/F W (see main text for details). A prominent agreement between the TB approach and the Dirac equation is observed. (b) Fermi velocity for a metallic aCNT and a zCNT as a function of the field F = ΔV/d, where ΔV is the potential drop across the CNT and d is its diameter. v F (F = 0) = 8.617 × 105 m/s for the zCNT and v F (F = 0) = 8.010 × 105 m/s for the aCNT. In all cases, v F is significantly reduced when the field is switched on.
