ATOMIC_SPECIES
Al 13 Al_ONCV_PBE-1.0.upf upf201
Si 14 Si_ONCV_PBE-1.0.upf upf201

LATTICE_CONSTANT
10.2  // add lattice constant

LATTICE_VECTORS
0.5 0.5 0.0
0.5 0.0 0.5
0.0 0.5 0.5

ATOMIC_POSITIONS
Direct 

Al
0.0
0
Si      // Element type
0.0     // magnetism
2
0.00 0.00 0.00 1 1 1
0.25 0.25 0.25 1 1 1
