<div dir="ltr"><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><span style="font-family:arial,sans-serif">Hi Friends,</span></div>
<p>I plan to calculate the infrared spectrum of anatase TiO2 bulk using pw.x (scf), ph.x calculates phonon frequencies and effective charge etc.. Then the dynmat.x is used to calculate LO-TO splitting.</p><p></p><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;display:inline">The ph.x calculation is performed at single q, i.e., q=0.0,0.0,0.0 in <a href="http://ph.in">ph.in</a> file</div><br><p></p>
<p></p><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;display:inline"></div>The question is how to define the<div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;display:inline"> </div>propagation direction of LO-TO splitting, q(i), i=1,2,3, in the <a href="http://dynmat.in">dynmat.in</a> file?<div><br></div><div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small">For instance, how to set q(1),q(2),q(3)?</div><br><p></p><p><span style="font-family:"trebuchet ms",sans-serif"> </span><br></p>
<br><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><br clear="all"></div><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><font face="trebuchet ms, sans-serif"><b><font style="background-color:rgb(255,255,255)" color="#000000" size="2">Wei Li</font></b><br>PhD student</font></div><div dir="ltr"><font face="trebuchet ms, sans-serif">State Key Lab of Theoretical & Computational Chemistry<br>Institute of Theoretical Chemistry<br>Jilin University<br>Changchun, 130023<br>P.R. China<br></font><div><font face="trebuchet ms, sans-serif">Email: <a href="mailto:liwei0099@gmail.com" target="_blank">liwei0099@gmail.com</a></font></div></div></div></div></div>
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