<div dir="ltr"><div>Hi David,</div>I think you need not consider the spin polarization for this system, which will accelerate the convergancy.<div>Cheers,</div><div>Yun<br><div><br></div></div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Mon, Apr 21, 2014 at 2:20 AM, David Foster <span dir="ltr"><<a href="mailto:davidfoster751@yahoo.com" target="_blank">davidfoster751@yahoo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Dear users<br>
<br>
I have prepared an input for interaction between CO and Pd(110). I optimized 3*3*3 supercell of Pd bulk, and then cleaved a 110 surface and constructed a slab. I inserted CO molecule which has been optimized with QE5.0.2 in it. Now, I try to optimize this mixed system (CO+Pd(110)).<br>
<br>
My main problem is that in scf I see the fluctuation in energies. My input and output has been attached. In all calculations I used QE5.0.2 and the same USPP. I used PBE DFT in the PP. I used nspin=2 due to the presence of oxygen atom. I introduced start_magnetization for all species. I fixed three bottom layers in the cell. I used ibrav=14 to optimize bulk phase of Pd, and didn't change it in all computation.<br>
I used degauss=0.001RY. In addition I used smearing technique for both bulk and slab.<br>
<br>
The run is continuing, but I think finally, I will encounter with problem.<br>
<br>
Any idea for rapid convergence and solve the issue in fluctuation energy is appreciated.<br>
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Regards<br>
<br>
David Foster<br>
<br>
Ph.D. Student of Chemistry<br>_______________________________________________<br>
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<p>Dr. Yun Wang<br>Research Fellow<br>Centre for Clean Environment and Energy<br>Griffith School of Environment<br>Gold Coast Campus, Griffith University<br>QLD 4222, Australia<br>Tel:(61-7) 5552 8456<br>Fax:(61-7) 5552 8067</p>
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