Dear TranSIESTA users, Now I investigated on the electron transport properties of a two-probe system with a zigzag graphene nanoribbon and an armchair graphene nanoribbion as the left and right electrodes respectively. As we know, the zigzag graphene nanoribbon is metallic and the armchair graphene nanoribbion has a band gap. However, I get a transmission function between in the gap near 0.2 eV in a magnitude of 1E-4 as shown below. This is unexpected. I have tried hard to find the origin, but failed. So, is this from the numerical error?
With best regards, /Guangping
