<p>My pwscf is used in calculating Si phonon dispersion.The trend of picture in </p>
<p>most special Symmetry is right.But the only K-X is wrong.I use Xcrysden to </p>
<p>get K-point.<br>I found most paper is dash line in 'K' point.So what is mean? Please anyone </p>
<p>could tell me! Thanks!<br>The attachment is my picture and reference paper.</p>