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Hello again!<br>
<br>
Yes, I wrote the coordinates like you say. Down,there is a simple input
wich I am trying to visualize. <br>
If you have xcrysden, please type:  xcrysden --pwi  name_of_file<br>
<blockquote><br>
 <small>&control<br>
    calculation='scf'<br>
    restart_mode='from_scratch',<br>
    prefix='C'<br>
    pseudo_dir = '/scratch/aritz/pseudo/',<br>
    outdir='/scratch/aritz/tmp/'<br>
    tprnfor = .true.<br>
    tstress = .true.<br>
 /<br>
 &system    <br>
       ibrav=  4,celldm(1)=4.69, celldm(3)=6.0,nat=2,ntyp= 1,<br>
    ecutwfc =22, occupations='smearing',smearing='methfessel-paxton',<br>
    degauss=0.025<br>
 /<br>
 &electrons<br>
    conv_thr =  1.0d-8<br>
    mixing_beta= 0.7<br>
 /<br>
ATOMIC_SPECIES<br>
 C  12.305  C.pz-bhs.UPF<br>
ATOMIC_POSITIONS<br>
 C 0.00 0.288675 0.0000<br>
 C 0.50 0.577350 0.0000<br>
K_POINTS {automatic}<br>
16 16 1   0 0 0 </small><br>
</blockquote>
THANKS!!<br>
<br>
Gerardo Ballabio wrote:
<blockquote cite="mid1112797919l.18590l.0l@nb-ballabio.cineca.it"
 type="cite">On 04/06/05 16:25:23, Aritz Leonardo wrote:
  <br>
  <blockquote type="cite">I wrote those coordinates from the beginning
and before calculating  anything I tried to visualize the structure
with xcrysden. By some  reason which I don't understand atoms do not
appear in the same z  plane .
    <br>
  </blockquote>
  <br>
You did write also the z coordinate in your input file, didn't you?
  <br>
The positions section should be like this:
  <br>
  <br>
ATOMIC_POSITIONS alat
  <br>
  C  0.0  0.2886751346  0.0
  <br>
  C  0.5  0.5773502692  0.0
  <br>
  <br>
Gerardo
  <br>
  <br>
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</blockquote>
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