<div dir="ltr"><div><div><div><div><div><div><div><div><div><div><div>The answer sounds little bit confusing.<br></div>According to reference arxiv:cond-mat/0504077v2,<br></div>The converged value corresponds to minimal possible broadening, which still<br></div>guarantee the convergence with respect to number of k-points.<br><br></div>Could you please clarify this question?<br></div>I also would really appreciate if authors explain some notification in the manuscript.<br><br></div>If I take as a prototype example03 from PHonon directory:<br><br></div>1) Does the notification in figure 9 k=16->64 means: 16x16x16 kpoints grid in <a href="http://al.scf.in">al.scf.in</a> and 64x64x64 in file <a href="http://al.scf.fit.in">al.scf.fit.in</a>?<br></div>2) Does the notification in Figures 10,11 q=8->20 means: 8x8x8 q points grid in files <a href="http://al.elph.in">al.elph.in</a> and 20x20x20 in input file matdyn.in.dos?<br><br></div>Thank you,<br><br></div>German Samolyuk<br></div>ORNL<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Oct 6, 2014 at 4:27 AM, Lorenzo Paulatto <span dir="ltr"><<a href="mailto:lorenzo.paulatto@impmc.upmc.fr" target="_blank">lorenzo.paulatto@impmc.upmc.fr</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
If your k point grid is fine enough, if you plot lambda as a
function of the broadening there is a plateau, i.e. it looks like
this:<br>
<br>
lambda<br>
^<br>
|\<br>
| \<br>
| \______ <-- converged value<br>
| \<br>
|_________\__> broadening<br>
<br>
<br>
The correct value of lambda is the one on the plateau<br>
<br>
<br>
hth<div><div class="h5"><br>
<br>
<br>
<div>On 10/06/2014 07:11 AM, Elio Physics
wrote:<br>
</div>
</div></div><blockquote type="cite"><div><div class="h5">
<div dir="ltr">Hello all,
<div><br>
</div>
<div>I have calculated the electron phonon interaction of a
system I am working on and got the following results:</div>
<div><br>
</div>
<div>
<div> Electron-phonon coupling constant, lambda</div>
<div><br>
</div>
<div> Broadening 0.0050 lambda 0.0004 dos(Ef) 0.0038</div>
<div> Broadening 0.0100 lambda 0.0630 dos(Ef) 0.5291</div>
<div> Broadening 0.0150 lambda 0.1143 dos(Ef) 1.0535</div>
<div> Broadening 0.0200 lambda 0.1077 dos(Ef) 1.4146</div>
<div> Broadening 0.0250 lambda 0.0919 dos(Ef) 1.8217</div>
<div> Broadening 0.0300 lambda 0.0860 dos(Ef) 2.2762</div>
<div> Broadening 0.0350 lambda 0.0911 dos(Ef) 2.7504</div>
<div> Broadening 0.0400 lambda 0.1039 dos(Ef) 3.2086</div>
<div> Broadening 0.0450 lambda 0.1203 dos(Ef) 3.6247</div>
<div> Broadening 0.0500 lambda 0.1368 dos(Ef) 3.9875</div>
</div>
<div><br>
</div>
<div>I do not really understand how to interpret these results.
Do we need to choose only one of those broadening values or
should the value of lambda be the same for all of the
broadening values, i.e convergence?.....Is there any document
or (maybe paper) which can actually help me to understand
these numbers. Your help is highly appreciated.</div>
<div><br>
</div>
<div><br>
</div>
<div>Thanks in advance</div>
<div><br>
</div>
<div>Elio</div>
<div>University of Rondonio</div>
<div>Brazil </div>
</div>
<br>
<fieldset></fieldset>
<br>
</div></div><pre>_______________________________________________
Pw_forum mailing list
<a href="mailto:Pw_forum@pwscf.org" target="_blank">Pw_forum@pwscf.org</a>
<a href="http://pwscf.org/mailman/listinfo/pw_forum" target="_blank">http://pwscf.org/mailman/listinfo/pw_forum</a></pre><span class="HOEnZb"><font color="#888888">
</font></span></blockquote><span class="HOEnZb"><font color="#888888">
<br>
<pre cols="72">--
Dr. Lorenzo Paulatto
IdR @ IMPMC -- CNRS & Université Paris 6
+33 (0)1 44 275 084 / skype: paulatz
<a href="http://www.impmc.upmc.fr/~paulatto/" target="_blank">http://www.impmc.upmc.fr/~paulatto/</a>
23-24/4é16 Boîte courrier 115, 4 place Jussieu 75252 Paris Cédex 05</pre>
</font></span></div>
<br>_______________________________________________<br>
Pw_forum mailing list<br>
<a href="mailto:Pw_forum@pwscf.org">Pw_forum@pwscf.org</a><br>
<a href="http://pwscf.org/mailman/listinfo/pw_forum" target="_blank">http://pwscf.org/mailman/listinfo/pw_forum</a><br></blockquote></div><br></div>