AEXX
AEXX = [real]
| Default: AEXX | = 0.25 | if LHFCALC=.TRUE. |
| = 0 | otherwise |
Description: AEXX specifies the fraction of exact exchange in a Hartree-Fock-type/hybrid-functional calculation.
| Mind: For versions of VASP prior to 6.4.0, ALDAX was constrained to be equal to 1.0-AEXX. This constraint is lifted since VASP.6.4.0. |
For AEXX=1.0, VASP switches off correlation by default (ALDAC=0.0, AGGAC=0.0, and AMGGAC=0.0) and thus runs a full Hartree-Fock-type calculation.
Related tags and articles
ALDAX, ALDAC, AGGAX, AGGAC, AMGGAX, AMGGAC, LHFCALC, HFSCREEN, List of hybrid functionals
References