Dear Stefano<br>Thanks a lot for your help.It helps me,<br>Regards<br>amin<br><br><div><span class="gmail_quote">On 10/8/06, <b class="gmail_sendername">Stefano Baroni</b> <<a href="mailto:baroni@sissa.it" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
baroni@sissa.it</a>> wrote:</span>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div>Hi Amin. It is a matter of definition that may or may be not useful, according to the use that one makes of it.
<div>The projected density of states reads:</div><div><br></div><div>n(\epsilon) = \sum_n | \langle \psi_n | \phi_0 \rangle |^2 \delta(\epsilon-\epsilon_n)</div><div><br></div><div>where \phi_0 is the orbitals you want to project onto, and \phi_n and \espilon_n are eigenpairs of the Kohn-Sham equation. The above expression, that can be seen as the imaginary part of the one-electron Green's function, is perfectly well defined for any localized orbital irrespective of the basis set used to expand the Kohn-Sham orbitals. In a nutshell, n(\epsilon) expresses the contribution of the localized orbital to the total density of states of the system under study.
</div><div><br></div><div>does this help?</div><div><br></div><div>regards - SB</div><div><br></div><div><font size="5"><span style="font-size: 18px;"><br></span></font></div><div><div><span>
<font size="5"><span style="font-size: 18px;"><br></span></font><div><div>On Oct 8, 2006, at 12:40 PM, Amin Babazadeh wrote:</div><br><blockquote type="cite"><div>dear users</div> <div>In espresso code we can calculate the DOS for s,p,or d orbitals but as i know in pwscf method we expand a plane wave function and use it to find eigenvalues and eigenstete and in the expanded plane wave we don't have a quantum numbers (i mean n & l ) or
orbitals.So how we can say that this is a DOS diagram of s orbital or p orbital.</div> <div>Sincerely yours <br clear="all"><br>-- <br>AMIN </div></blockquote></div><br></span></div><div> <span style="border-collapse: separate; border-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px;">
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<span style="font-size: 12px;"><span style="font-size: 12px;">Stefano Baroni - SISSA</span></span></span></font><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;"><span style="font-size: 12px;">
</span></span></span></font><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;"><span style="font-size: 12px;">&</span></span></span></font><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;">
<span style="font-size: 12px;"> </span></span></span></font><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;"><span style="font-size: 12px;">DEMOCRITOS National Simulation Center - Trieste</span>
</span></span></font></div><div style="margin: 0px;"><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;"><span style="font-size: 12px;">[+39] 040 3787 406 (tel) -528 (fax) / stefanobaroni (skype)
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<span style="font-size: 12px;">Please, if possible, don't</span></span></span></font><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;"><span style="font-size: 12px;"> </span></span></span></font>
<font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;"><span style="font-size: 12px;">send me MS Word or PowerPoint attachments</span></span></span></font></div><div style="margin: 0px;"><font size="3">
<span style="font-size: 12px;"><span style="font-size: 12px;"><span style="font-size: 12px;">Why? See:</span></span></span></font><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;"><span style="font-size: 12px;">
</span></span></span></font><a href="http://www.gnu.org/philosophy/no-word-attachments.html" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)"><font color="#0023e9" size="3"><span style="font-size: 12px; color: rgb(0, 35, 233);">
<span style="color: rgb(0, 35, 233); font-size: 12px;"><span style="color: rgb(0, 35, 233); font-size: 12px;">http://www.gnu.org/philosophy/no-word-attachments.html</span></span></span></font></a></div><div><br></div><br>
</span></span></span> </div><br></div></div>
</blockquote></div><br><br clear="all"><br>-- <br>AMIN