Welcome to Density Functional Tight Binding!
This site contains some information about the Density Functional based Tight Binding (DFTB) method which is a fast and efficient quantum mechanical simulation method. It is implemented in the DFTB+ program and in several other program packages. For a (non complete) list of the available codes, see the implementations subpage.
This site also offers parameters (Slater-Koster files) for the DFTB method. They are free for both, non-commercial and commercial research purposes. See the description of the individual sets for details on the licensing conditions.
This set covers elements between H–Rn for solids with SCC DFTB. See the section General purpose parameter sets on the Download page.
DFTB spin-orbit constants for most of the periodic table are now available. See the section Spin-Orbit constants on the Download page.