<div dir="ltr"><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS""><font size="2">Dear users,</font></span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS""> </span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS"">Using 5.1.0
version, I calculate el-ph coupling(EPC) of a
hexagonal system.(ibrav=4)</span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS"">I have a problem about <a href="http://lambda.in">lambda.in</a>
file. </span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS""> </span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS"">To get the weight of each q-point, I use
"kpoint.x"</span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS"">  bravais lattice >> 4</span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS"">  mesh n1 n2 n3 >> 2 2 2</span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS"">  mesh k1 k2 k3 >> 0 0 0 (no
shift)</span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS"">  write all k? >> y</span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS""> </span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS"">  # of k-points ==  8 of 8</span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS"">    8<br>
    1   0.0000000  0.0000000 
0.0000000   1.00<br>
    2   0.5000000  0.2886751 
0.0000000   3.00<br>
    3   0.0000000  0.5773503 
0.0000000   0.00   2<br>
    4   0.5000000  0.8660254 
0.0000000   0.00   2<br>
    5   0.0000000  0.0000000 
0.3660084   1.00<br>
    6   0.5000000  0.2886751 
0.3660084   3.00<br>
    7   0.0000000  0.5773503 
0.3660084   0.00   6<br>
    8   0.5000000  0.8660254 
0.3660084   0.00   6</span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS""> </span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS"">However, </span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Arial Unicode MS"">Dynamical matrices are created 6q-points. </span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS"">   6<br>
   0.000000000   0.000000000   0.000000000 <br>
   0.000000000   0.000000000  -0.366008364 <br>
   0.000000000  -0.577350269   0.000000000 <br>
   0.000000000  -0.577350269  -0.366008364 <br>
  -0.500000000  -0.866025404   0.000000000 <br>
  -0.500000000  -0.866025404  -0.366008364 </span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS""> </span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS""> </span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS"">I have a question.</span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS""> </span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS"">1.Which value of weight should I use in
<a href="http://lambda.in">lambda.in</a> file?</span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS"">  (I am
confused about the last four weight)</span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS"">   0.000000000  
0.000000000   0.000000000  1.00
<br>
   0.000000000   0.000000000  -0.366008364  1.00<br>
   0.000000000  -0.577350269   0.000000000  0.00 or 3.00 ?<br>
   0.000000000  -0.577350269  -0.366008364  0.00 or 3.00 ?<br>
  -0.500000000  -0.866025404   0.000000000  0.00 or 3.00 ?<br>
  -0.500000000  -0.866025404  -0.366008364  0.00 or 3.00 ?</span></p><font color="#000000" face="굴림">

</font><div align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS""></span><br></div><div align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS""> </span></div><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS""> </span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS"">Best wishes</span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS""> </span></p><font color="#000000" face="굴림">

</font><p align="left" style="background:white;margin:0cm 0cm 0pt;text-align:left;line-height:normal;vertical-align:middle"><span lang="EN-US" style="color:black;font-family:"Arial Unicode MS""><font size="2">Myung-Chul</font></span></p><font color="#000000" face="굴림">

</font></div>