<div>Dear all,</div>
<div> </div>
<div>For those of you who knows program "matdyn.x" well, I have a question.</div>
<div> </div>
<div>In the description part (head) of the program, I noticed the following:</div>
<div>"dos if .true. calculate phonon dos using tetrahedra and a uniform q-point</div>
<div>grid. NB: may not work properly in noncubic materials."</div>
<div> </div>
<div>Could someone kindly explain to me what "using tetrahedra" means? </div>
<div>if the program does not work properly for noncubic materials, how to get the</div>
<div>proper phonon dos?</div>
<div> </div>
<div>Thanks in advance!</div>
<div><br>-Peter<br> </div>