[Pw_forum] zns phonon freq

[saman ghaderyan]

hi
when i calculation phonon freq for zns i look at q-vector (0 0 0)
acoustic freq  is in order 45 cm-1, i think it will be 0 cm-1?
if that's right ,how can i changed it?
but for another q-vectors almost are correct .
thanks
saman ghaderyan
buali sina university
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