Hi everyone,<br>
<br>
I know that if you want to obtain the phonon DOS or dispersion curve,<br>
you should firstly do a scf calculation by pw.x and then an nscf one<br>
at a generic q-point followed by a ph.x calculation. When you have <br>
finished on a mesh of q-points, you can obtain the real space force <br>
constant and then derive the phonon frequencies at any q-point.<br>
<br>
The ASR is usually applied in the last step. My question is, if it is<br>
possible to exert the ASR directly in the ph.x calculation, so we <br>
can obtain the same frequencies in that step as those obtained in <br>
the last step for a given q-point.<br>
<br>
Thanks.<br>
<br>
Konzern<br>