Got a same Density of states number of times

[achyuttt]

Hello everyone,

I have been trying to validate my DFTB+ results with DFT calculation lately. I have my Density of States (DOS) calculated from DFT and DFTB+. But they are not matching.

I have tried multiple number of times in DFTB+ to calculate the DOS with changing the parameters such as k points, with geometry optimization, without geometry optimization, etc. But for all the calculations, it gives the same DOS. Is this possible? I have been using matsci parameter set for slater koster files.

Please help me how can I get a valid DOS for 2D COFs.

If any of us have calculated DOS and Band structure of 2D COFs, I would be grateful if I could get the input file.

Thank you everyone.