Dear PWSCF user,<br>I am doing phono calculation of graphene sheet.<br>If i just want to calculate the frequencies at K point (0.333330 0.577350 0.000000<br>) i am using the following input files<br><br><br><b><span style="color: rgb(255, 0, 0);">phonons of Graphene</span><br style="color: rgb(255, 0, 0);">
<span style="color: rgb(255, 0, 0);"> &inputph</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);">! recover =.true.,</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);"> tr2_ph=1.0d-14,</span><br style="color: rgb(255, 0, 0);">
<span style="color: rgb(255, 0, 0);"> alpha_mix(1)=0.4,</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);"> prefix='graphene',</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);"> amass(1)=12.0107,</span><br style="color: rgb(255, 0, 0);">
<span style="color: rgb(255, 0, 0);"> outdir='./OUT',</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);"> fildyn='Graph.dyn2',</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);">! epsil= .true.,</span><br style="color: rgb(255, 0, 0);">
<span style="color: rgb(255, 0, 0);">! trans= .true.,</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);">! ldisp=.true.</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);">! nq1=6, nq2=6, nq3=1</span><br style="color: rgb(255, 0, 0);">
<span style="color: rgb(255, 0, 0);"> lnscf=.true.,</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);">/</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);">0.333330 0.577350 0.000000</span><br style="color: rgb(255, 0, 0);">
</b><br><br><br>and <a href="http://q2r.in">q2r.in</a> as<br><br><b><span style="color: rgb(255, 0, 0);"> &input</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);"> zasr='crystal', flfrc='Graph.fc'</span><br style="color: rgb(255, 0, 0);">
<span style="color: rgb(255, 0, 0);"> /</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);">1 1 1</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);">1</span><br style="color: rgb(255, 0, 0);">
<span style="color: rgb(255, 0, 0);">Graph.dyn2</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);">/</span></b><br><br>after using q2r.x it gives the error q not allowed, but instead of 1 1 1 if i use 6 6 1, then it gives error 'q point(s) missing'<br>
<br>So is it possible to get the correct phonon frequencies of some individual q-point (in my case K), after using the q2r.x <br>and if its possible. Kindly tell me how the inputs should be modified<br><br>-- <br>Bipul Rakshit<br>
Research Fellow,<br>S N Bose Centre for Basic Sciences,<br>Salt Lake,<br>Kolkata 700 098<br>India<br><br clear="all"><br>-- <br>Dr. Bipul Rakshit<br>Research Associate,<br>S N Bose Centre for Basic Sciences,<br>Salt Lake,<br>
Kolkata 700 098<br>India<br>