NGYF

From VASP Wiki

NGYF = [integer]
Default: NGYF = set in accordance with PREC, NGY, ENCUT and ENAUG 

Description: NGYF sets the number of grid points in the "fine" FFT grid along the second lattice vector.


On this "fine" FFT mesh the localized augmentation charges are represented if ultrasoft pseudopotentials (USPPs) or the PAW method are used. In case USPPs are used, the local potentials (exchange-correlation, Hartree-potential and ionic potentials) are also calculated on this "fine" FFT-mesh.

By default NGYF is set in accordance with the requested "precision" mode PREC, NGY, and the plane wave kinetic energy cutoffs ENCUT and ENAUG:

PREC NGY NGYF
Normal 3/2× NGY
Single (VASP.5) 3/2× NGY
Single (VASP.6) NGY
SingleN (VASP.6) 3/2× NGY
Accurate NGY
Low 3/2×
Medium 3/2×
High 16/3×

where

with =ENCUT and =ENAUG.

Alternatively, NGYF can be set to a specific value in the INCAR file.

Related tags and articles

NGX, NGY, NGZ, NGXF, NGZF, PREC, ENCUT, ENAUG

Examples that use this tag