<p>dear ben<br>
l would rather suggest u do convergence with ecut first.</p>
<p>its a better way to start and remember ecutrho for ultrasoft pseudopotential is btw 8-12 times ecutwfc</p>
<div class="gmail_quote">On May 25, 2013 6:04 PM, "Ben Palmer" <<a href="mailto:benpalmer1983@gmail.com">benpalmer1983@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<u></u>
<div text="#000000" bgcolor="#ffffff">
Hi everyone, <br>
<br>
I made a post some time ago asking for advice on k-point
convergence, and I had a lot of helpful replies. I just wanted to
ask for a bit more help. I've been converging for Ruthenium and a
few other elements. They seem to converge at a smearing width of
0.05, then the 18x18x18 breaks away from the rest at higher smearing
widths. Would this suggest 0.05 is the sweet spot, or would it mean
I'd have to continue to higher numbers of k-points?<br>
<br>
Plot of force vs smearing width:<br>
<img src="cid:part1.01010503.04060803@gmail.com" alt="" width="602" height="451"><br>
Plot of force relative to 18x18x18 k-points:<br>
<img src="cid:part2.04050301.00010907@gmail.com" alt="" width="607" height="455"><br>
All the best,<br>
<br>
Ben Palmer, Student @ University of Birmingham, UK<br>
</div>
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