ATOMIC_SPECIES
Si 28 Si.pz-vbc.UPF

LATTICE_CONSTANT
4  // add lattice constant

LATTICE_VECTORS
1 0 0
0 1 0
0 0 1

ATOMIC_POSITIONS
Direct 

Si	// Element type	
0.0	// magnetism
2	
0.00 0.00 0.00 1 1 1
0.5 0.5 0.5 1 1 1
