<p dir="ltr">Dear muthu<br>
If you use ibrav=0 ,you should specify &cell_parameters in your input file <a href="http://scf.in">scf.in</a></p>
<p dir="ltr">Best Regards<br>
Ashkan Shekaari<br>
Independent Condensed-Matter Researcher / Programmer<br>
Tehran, Iran<br>
Tell: +98 933 459 7122 ; +98 921 346 7384<br>
Website:<a href="http://fizx.blogfa.com"> http://</a><a href="http://fizx.blogfa.com">fizx.blogfa.com</a></p>
<div class="gmail_quot<blockquote class=" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">You cannot use k points labels with ibrav=0. In order to plot the bands<br>
of the 8 atoms cell, it is necessary to define the path in the cubic<br>
Brillouin zone giving the coordinates of the k points.<br>
<br>
HTH,<br>
<br>
Andrea<br>
<br>
<br>
On Sun, 2015-06-07 at 20:33 +0530, Muthu V wrote:<br>
> Dear All QE Users<br>
><br>
> I am trying to get band strucutre for Si crystal. i have edited the example<br>
> input file and used free lattce option (ibrav= 0 instead of ibrav= 2) with<br>
> no of atoms is 8 instead of 2.<br>
> while scf runs and gives sucessful result without any error. but when<br>
> programme enters into band calculation it shows the following error<br>
><br>
><br>
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><br>
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><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
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><br>
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> *Program PWSCF v.5.1.1 starts on 7Jun2015 at 20:18:34 This program is<br>
> part of the open-source Quantum ESPRESSO suite for quantum simulation<br>
> of materials; please cite "P. Giannozzi et al., J. Phys.:Condens.<br>
> Matter 21 395502 (2009); URL <a href="http://www.quantum-espresso.org" target="_blank">http://www.quantum-espresso.org</a><br>
> <<a href="http://www.quantum-espresso.org" target="_blank">http://www.quantum-espresso.org</a>>", in publications or presentations<br>
> arising from this work. More details at<br>
> <a href="http://www.quantum-espresso.org/quote" target="_blank">http://www.quantum-espresso.org/quote</a><br>
> <<a href="http://www.quantum-espresso.org/quote" target="_blank">http://www.quantum-espresso.org/quote</a>> Parallel version (MPI), running<br>
> on 1 processors Waiting for input... Reading input from<br>
> standard<br>
> input %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>
> Error in routine find_bz_type (1): Wrong<br>
> ibrav %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>
> stopping ...*<br>
><br>
> With this email i have enclosed the script file i have used. How to reslove<br>
> this problem?<br>
><br>
> Thank you<br>
><br>
><br>
><br>
> *---------------------------------------------*<br>
><br>
> *Muthu V *<br>
><br>
><br>
><br>
><br>
><br>
> *Madurai Kamaraj University Madurai Tamil<br>
> NaduIndia---------------------------------------------*<br>
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<br>
--<br>
Andrea Dal Corso Tel. 0039-040-3787428<br>
SISSA, Via Bonomea 265 Fax. 0039-040-3787249<br>
I-34136 Trieste (Italy) e-mail: <a href="mailto:dalcorso@sissa.it">dalcorso@sissa.it</a><br>
<br>
<br>
<br>
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