Hello,

you can relax the cell in the directions of the slab using keyword cell_do_free.

HTH
Pascal

Le 11 déc. 2015 à 09:33, Jaret Qi <[email protected]> a écrit :

> Hello QE users,
> I need to add vacuum along the z-direction to study E-field effect using 
> saw-like potential. In this case do I need to do vc-relax or relax will be 
> enough?
> 
> Thank you in advance,
> Jaret
> ASU
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--
Pascal Boulet - MCF HDR, Resp. L1 MPCI - DEPARTEMENT CHIMIE
Aix-Marseille Université - ST JEROME - Avenue Escadrille Normandie Niemen - 
13013 Marseille
Tél: +33(0)4 13 55 18 10 - Fax : +33(0)4 13 55 18 50
Site : http://allos.up.univ-mrs.fr/pascal - Email : [email protected]
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