<div dir="auto">Just to be clear: only available in qe 6.4 and later. <br><br><div data-smartmail="gmail_signature">-- <br>Lorenzo Paulatto<br>Written on a virtual keyboard with real fingers</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, 2 Apr 2019, 08:47 Ing. Martin Matas, <<a href="mailto:matasma@kfy.zcu.cz">matasma@kfy.zcu.cz</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Joaquim,<br>
<br>
I believe cell_dofree='ibrav' should do the work. The ibrav choice is preserved in that case.<br>
<br>
Hope that helps.<br>
<br>
Martin Matas<br>
University of West Bohemia<br>
Pilsen, Czech Republic<br>
<br>
<br>
<br>
Pondělí, 1 Duben, 2019 17:27 CEST, Joaquim Jornet Somoza <<a href="mailto:j.jornet.somoza@gmail.com" target="_blank" rel="noreferrer">j.jornet.somoza@gmail.com</a>> napsal:<br>
<br>
> Dear QuantumEspresso user,<br>
> <br>
> I would like to optimize the cell parameters of a molecular crystal by<br>
> keeping the bravais lattice as ibrav=6 (i.e. dim(1)=a=b dim(3) = c/a and<br>
> all angles are 90º)<br>
> <br>
> However I could not find a keyword that preserves the a = b relation.<br>
> <br>
> Is any option to keep the cell optimization in the same point group ?<br>
> <br>
> Thanks in advance !<br>
> quim<br>
> <br>
> -- <br>
> ----------------------------------------------------------------------------------------------------------------------------------------<br>
> Dr. Joaquim Jornet Somoza<br>
> Marie Skladowska-Curie IF Fellow - Postdoctoral Researcher<br>
> email: <a href="mailto:j.jornet.somoza@gmail.com" target="_blank" rel="noreferrer">j.jornet.somoza@gmail.com</a> tel: 0034 650 73 48 91<br>
> Theory Department<br>
> The Max Planck Institute for the Structure and Dynamics of Matter (MPSD)<br>
> Bldg. 99 (CFEL)<br>
> Luruper Chaussee 149<br>
> 22761 Hamburg<br>
> <br>
> Visiting Researcher<br>
> Nano-Bio Spectroscopy group<br>
> Departamento de Física de Materiales<br>
> Universidad del País Vasco (UPV/EHU)<br>
> Donostia-San Sebastián, Gipuzkoa, Spain<br>
<br>
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