IGPAR
IGPAR = 1 | 2 | 3
Description: This tag specifies the socalled parallel or [math]\displaystyle{ \mathbf{G}_{\parallel} }[/math] direction in the integration over the reciprocal space unit cell needed for LCALCPOL.
Related tags and articles
LCALCPOL, LCALCEPS, EFIELD_PEAD, LPEAD, IPEAD, LBERRY, NPPSTR, DIPOL, Berry phases and finite electric fields