Meta-GGA exchange-correlation functionals depend on the electron density , its first derivative and the kinetic-energy density :
Although meta-GGAs are slightly more expensive than GGAs, they are still fast to evaluate and appropriate for very large systems. Furthermore, meta-GGAs can be more accurate than GGAs and more broadly applicable. Note that as in most other codes, meta-GGAs are implemented in VASP within the generalized KS scheme. The meta-GGA that is currently the most widely used in solid-state physics is SCAN. The meta-GGA functionals using the Laplacian of the electron density, , are not yet available in VASP.