KPOINT_BSE
KPOINT_BSE = [integer] (optionally [integer],[integer],[integer])
Description: KPOINT_BSE specifies the k-point index at which VASP calculates the dielectric matrix.
In the simplest form, one can specify
KPOINT_BSE = index_of_k-point
Select the desired k point from the list of k points in the OUTCAR file. Additionally, a shift by an arbitrary reciprocal lattice vector can be supplied by specifying three additional integer numbers:
KPOINT_BSE = index_of_k-point n1 n2 n3
This allows calculating the dielectric function at a k point outside of the first Brillouin zone corresponding to
where are the reciprocal-lattice vectors of the unit cell.