AMGGAX

AMGGAX = [real]

Default: AMGGAX	= 1.0-AEXX	if LHFCALC=.TRUE.
	= 1.0	if LHFCALC=.FALSE.

Description: AMGGAX is a parameter that multiplies the meta-GGA exchange functional (available as of VASP.6.4.0).

AMGGAX can be used as the fraction of meta-GGA exchange in a Hartree-Fock/DFT hybrid functional (possible since VASP.6.4.0).

Important: AMGGAX can be used only if LHFCALC=.TRUE.

Mind:

Note the difference with respect to AGGAX: AMGGAX multiplies the whole meta-GGA exchange functional, while AGGAX multiplies only the gradient-correction term of a GGA exchange functional.
AMGGAX is implemented for the functionals from Libxc (see LIBXC1 for details).

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