SYSTEM = Si optical frozen displacement
ENCUT=550
PREC=Accurate
EDIFF=1E-6
ISMEAR=0
SIGMA=0.05
ISYM=0
NSW=0
IBRION=-1
LREAL=.FALSE.
LASPH=.TRUE.
LWAVE=.FALSE.
LCHARG=.FALSE.
NELM=150
ALGO=Normal
