Hi, Jiayu<br><br><div class="gmail_quote">On Fri, Mar 20, 2009 at 9:34 AM, Jiayu Dai <span dir="ltr"><<a href="mailto:daijiayu@nudt.edu.cn">daijiayu@nudt.edu.cn</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im"><br>
<br>
> Correct (re tempw). But note that unless you have high temperatures, of<br>
thousands of degrees, you will not see much of an effect (at all) inwhat happens<br>
to the electron<br>
</div>> Try it yourself, and see how much e.g. forces on atoms depend onsmearing_width.<br>
><br>
> The chemical potential of the electrons is the fermi energy, fixed sthat you<br>
<div class="im">have system neutrality, or whatever you specify in nele<br>
</div><div class="im">> The atoms are fixed in number, so you cannot specify their chemical<br>
</div>>potential - you would do simulations in the NVT or NPT ensemble, botfor the ions<br>
and the electrons.<br>
><br>
Thanks, Nicola. I have another problem: how to set the number of bands in the scf<br>
or MD calculation? The nbnd parameter is just meaningful in the DOS or the band<br>
calculations. Is that the nele parameter?<br>
</blockquote><div>How do you come to this conclusion ? <br>For some metal systems, we need include <br>many bands to reach convergence. Therefore, <br>what is your point for these systems ?<br>thanks!<br><br>Regards<br>
<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
And could you tell me which file incudes the program of ferimi-dirac? Is that<br>
weights.f90?<br>
<br>
Besides, in pwscf, the GGA+U is note performed now, right?<br>
<br>
Thanks.<br>
<br>
<br>
<br>
<br>
------------------------------<br>
<div class="im">Jiayu Dai<br>
National University of Defense Technology, P R China<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>Hai-Ping Lan <br>Department of Electronics ,<br>Peking University , Bejing, 100871<br><a href="mailto:lanhaiping@gmail.com">lanhaiping@gmail.com</a>, <a href="mailto:hplan@pku.edu.cn">hplan@pku.edu.cn</a><br>