Most likely the reason is the incorrect selection of physical parameters (you're basically not in the regime where the Landau levels would be protected). Plus you seem to have a lower chemical potential in the leads than in the scattering region.
Hope that helps, Anton
On Thu, Feb 4, 2016 at 2:09 AM, james edward hernandez email@example.com wrote:
I would like to verify the Landau Levels in the Hall conductance of graphene nanoribbons. The code works for conductance, band structure and Hall conductance, but I would like to know why the plateaus are not visible. Also, I would like to know why the plot of wavefunctions does not return to the existence of edge states, which should be for zigzag graphene nanoribbons.
Attached is the code.