ATOMIC_SPECIES
Si 28.085 Si.upf
O  15.999 O.upf

LATTICE_CONSTANT
7.0

LATTICE_VECTORS
1.0 0.0 0.0
0.0 1.0 0.0
0.0 0.0 1.0

ATOMIC_POSITIONS
Direct
Si
0.0
1
0.0 0.0 0.0
O
0.0
1
0.5 0.5 0.5
