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    You can use the Interace Builder in VNL to create the interface and
    then export the pwscf input file: <a
      href="http://docs.quantumwise.com/tutorials/interfaces.html"><a class="moz-txt-link-freetext" href="http://docs.quantumwise.com/tutorials/interfaces.html">http://docs.quantumwise.com/tutorials/interfaces.html</a></a><br>
    <br>
    <div class="moz-cite-prefix">On 04/05/2016 12:09 PM, Sarah Alpine
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAJr6meA5h0Hr95sihdjrSO89AWRdpydothEXNggR3PTCmEgiEA@mail.gmail.com"
      type="cite">
      <div dir="ltr">If anyone has any suggestions, I'd really
        appreciate it. Thanks!<br>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Wed, Mar 30, 2016 at 11:28 AM, Sarah
          Alpine <span dir="ltr"><<a moz-do-not-send="true"
              href="mailto:sarahalpine1@gmail.com" target="_blank">sarahalpine1@gmail.com</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div dir="ltr">
              <div>
                <div>
                  <div>Dear All,<br>
                  </div>
                      I am simulating a Copper-TiO2 interface, and since
                  Copper is FCC and TiO2 is tetragonal, I think I need
                  to use ibrav=0. In that case, how do I set up the
                  vacuum around the interface?<br>
                </div>
                Thanks,<br>
              </div>
              Sarah<br>
              <br>
              &CONTROL<br>
                calculation='vc-relax',<br>
                outdir='.',<br>
                prefix='calc',<br>
                pseudo_dir = './',<br>
                verbosity='high',<br>
                tstress=.true.,<br>
                tprnfor=.true.,<br>
              /<br>
              <br>
              &SYSTEM<br>
                ibrav=0,<br>
                celldm(1)=20.4938530538d0,<br>
                nat=35,<br>
                ntyp=3,<br>
                ecutwfc=40,<br>
                ecutrho=200,<br>
                occupations='smearing',<br>
                smearing='gaussian',<br>
                degauss=0.01<br>
              /<br>
              <br>
              &ELECTRONS<br>
                diagonalization='david',<br>
                conv_thr=1d-08,<br>
                mixing_mode='plain',<br>
                mixing_beta=0.7,<br>
              /<br>
              <br>
              ATOMIC_SPECIES<br>
                Cu 63.546000d0 Cu.pw-mt_fhi.UPF<br>
                O 15.999400d0  O.pw-mt_fhi.UPF<br>
                Ti 47.867000d0 Ti.pw-mt_fhi.UPF<br>
              <br>
              ATOMIC_POSITIONS {alat}<br>
                Cu   0.1666666667d0  -0.1178511302d0   0.1178511302d0<br>
              ...<br>
              <br>
              <br>
              K_POINTS {automatic}<br>
                8 8 8 1 1 1<br>
              <br>
              CELL_PARAMETERS {alat}<br>
                1.000000000000d0  0.000000000000d0  0.000000000000d0<br>
                0.000000000000d0  -0.471404520791d0  0.000000000000d0<br>
                0.000000000000d0  0.000000000000d0  1.618839606572d0<br>
              <br>
              <br>
            </div>
          </blockquote>
        </div>
        <br>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
Pw_forum mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Pw_forum@pwscf.org">Pw_forum@pwscf.org</a>
<a class="moz-txt-link-freetext" href="http://pwscf.org/mailman/listinfo/pw_forum">http://pwscf.org/mailman/listinfo/pw_forum</a></pre>
    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
Jess Wellendorff
Scientific Specialist
QuantumWise A/S
Fruebjergvej 3
Postbox 4 
DK-2100 Copenhagen 
Denmark

web:   <a class="moz-txt-link-abbreviated" href="http://www.quantumwise.com">www.quantumwise.com</a>
email: <a class="moz-txt-link-abbreviated" href="mailto:jess.wellendorff@quantumwise.com">jess.wellendorff@quantumwise.com</a>
--</pre>
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