[Pw_forum] supercell

[nadia cherifi]

Dears readers;

I inform you that I have just started to use the PWscf code,so, I am really not trying to annoy you withe my question; I am just trying to understand, so,I want to create a supercell from Ni (100) :(2*2) and I have a problem to optimize the vacuum which is between two slabs, I will be grateful if somebody can help me,,
Thanks 

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