I am trying to make Hartree potential of bcc Tungsten(001). My software is VASP. 5-layer should have 5 bound states. But I don't have them I heard it is a layer-layer spacing issue. I built slab of bcc structre :
POSCAR
a1 = a(1 0 0)
a2 = a(0 1 0)
a3 = a(0 0 50)
and with direct,
0 0 0.02
0.5 0.5 0.01
0 0 0
0.5 0.5 -0.01
0 0 -0.02
the z space should be 1/(2*50) = 0.01?
It seems z-direction spacing has a problem.