Thanks so much for replying me. Regarding the GaN you have said, taking a bigger unitcell means forexample having 4 unit cells with 16 atoms, or the unit cell still has 4 atoms and we just increase the length of the cell?
also, in GaN forexample again we have 2 Ga and 2 N in the unit cell, right, so how could I mention the basis I have for Ga as an example, because I have only mentioned the ghost atom with a negative sign of atomic number? All in all, how could I have a real Ga and a ghost Ga basis? Regards,
