DFT and Graphene
I have read a few papers lately that have used DFT based techniques to investigate metallic adatom adsorption on top of graphene (see for instance PRB 77, 235430 2008). I was under the impression that electrons in graphene are described by the Dirac equation and not the Schrodinger equation. How then can the electronic properties be accurately described using DFT techniques based in the Shcrodinger equation.
Thanks in advance