<div dir="ltr"><div>Thank you so much. It has worked.<br></div>Regards<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 26, 2015 at 1:13 PM, Guido Fratesi <span dir="ltr"><<a href="mailto:fratesi@mater.unimib.it" target="_blank">fratesi@mater.unimib.it</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Winfred,<br>
<br>
there is nothing wrong in what you are plotting. Indeed, with many atoms<br>
and many electrons the density of states increases and, in other words,<br>
"states do pack together".<br>
<br>
Eventually, in general you want to smoothen out your result so to<br>
recover something which is closer to the physically relevant limit of<br>
(supposing you are modeling a bulk system) infinitely large system, for<br>
which the contribution of individual states would generally be hidden in<br>
the system's continuum (think to exceptions like states in gaps). Or you<br>
want to take the DOS with a finite resolution. In both cases one smears<br>
out the results by attributing to each state a given width (degauss).<br>
<br>
Also check that the number of energy points in your plot is consistent<br>
with the width: i.e., you should have a spacing between the points which<br>
is smaller than the width of the peaks.<br>
<br>
HTH<br>
Guido<br>
<div class="HOEnZb"><div class="h5"><br>
On 26/02/2015 11:11, Winfred Mulwa wrote:<br>
> Dear all,<br>
> I am doing a pdos calculation of a supercell of 72 atoms and<br>
> my nbnd=220 during the nscf calculation. when i draw the graphs<br>
> using xmgrace, the states looks packed together. Please assist<br>
> where did i go wrong? attached are the graphs for PDOS and<br>
> spin polarization.<br>
> Regards<br>
> Mulwa Winfred.<br>
> D Phil Student, Computational Material Science Group,<br>
> University of the Free State - QwaQwa,<br>
> South Africa.<br>
<br>
</div></div><span class="HOEnZb"><font color="#888888">--<br>
Guido Fratesi<br>
<br>
Dipartimento di Fisica<br>
Universita` degli Studi di Milano<br>
Via Celoria 16, 20133 Milano, Italy<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature"><div dir="ltr"><div>Mulwa Winfred.<br>D Phil Student, Computational Material Science Group,<br>University of the Free State - QwaQwa,<br></div>South Africa.<br></div></div>
</div>