The structure in simulated file is the same as the paper. The only parameter that I couldn’t find in the paper was scattering rate which might be the reason why transmission data don’t match with the paper!
The good is that I could reproduce some of the paper results such as the mode profile. Please see below:
As you can see in my simulation file : Realization of Graphene-Based Tunable-modified.fsp (257.2 KB)
I place monitors slightly below or above the center of the graphene as your mode along the z-direction is anti-symmetric and become zero right in the middle of graphene layer.
I also modified the mesh and find out that the results are sensitive to mesh along the z-direction. It looks like in your case, even if we are using a 2D graphene, we still need to use finer mesh along the z-direction as this KB example.
The bad is that, as I mentioned, the results for transmission is not as expected. First thing would be to do a sweep over scattering rate and see how it changes. Second, would be to change the Ef and reproduce the results of Fig.4 in the paper. Also, reducing the mesh size and conducting some convergence test would be a good idea to make sure that the current mesh sizes are good enough (I didn’t have time to go below the current size as simulations are taking more than one hour).
Please run the simulations and let me know if the problem has solved.
Have a good weekend