<div dir="ltr">Dear Arthur,<div><br></div><div> I agree with Giovanni. Notice that ph.x uses q vectors in units of 2pi/a0 therefore I think you should use the option tpiba_b for your k vectors in pw.x.</div><div><br></div><div>Best regards,</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Em qua., 19 de out. de 2022 às 03:59, Arthur Arthur via users <<a href="mailto:users@lists.quantum-espresso.org">users@lists.quantum-espresso.org</a>> escreveu:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:16px"><div dir="ltr"><div><span style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">Dear Users and Developers,</span><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">I would like to plot phonons band structure calculated in the following way:</div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">scf (pw.x) -> ph (ph.x) -> q2r (q2r.x) -> matdyn (matdyn.x) -> plotband (plotband.x)</div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><br></div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">and electron band structure calculated in the following way:</div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">scf (pw.x) -> nscf (pw.x) -> bands (pw.x) -> bands (bands.x)<br></div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><br></div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">Of course, both calculations for the same parameters and k-path generated using the xcrysden.</div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">Unfortunately, I found the difference in the high-symmetry line (please see attachment).</div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">For phonons, the line is longer and the positions of K and M are inconsistent with these obtained for electrons.</div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><br></div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">Something is wrong because the high-symmetry line and G-K-M-G positions should be the same. Where could be a mistake?</div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><br></div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">Thank you for your response.</div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><br></div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">Arthur</div><div style="font-size:small;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">University of Birmingham</div></div><br></div></div></div>_______________________________________________<br>
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