<div dir="ltr"><div>thanks for reply.</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, May 26, 2020 at 4:06 PM Stefano de Gironcoli <<a href="mailto:degironc@sissa.it">degironc@sissa.it</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p><tt>the zero of eigenvalue energy in a solid is arbitrarily set
at the electrostatic average potential.</tt></p>
<p><tt>there is nothing special in the zero value for the
eigenvalues in a solid, in particular it is not the value of the
potential at infinite distance (which cannot be defined in a
solid extending to infinite).</tt></p>
<p><tt>HTH<br>
</tt></p>
<p><tt>stefano</tt><br>
</p>
<div>On 26/05/20 12:30, Neelam Swarnkar
wrote:<br>
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<blockquote type="cite">
<div dir="ltr">
<div>Dear Expert , user and all</div>
<div><br>
</div>
<div><br>
</div>
<div>I am calculating , the scf ,nscf calculation of B-Zn4Sb3
material . by PBE-PAW xc . and nscf.out file found the fermi
energy = -1.6482 eV <br>
</div>
<div> So, i want to know that , negative fermi energy is
possible in the qe calculation or not . <br>
</div>
<div><br>
</div>
<div>thanks in advance</div>
<div><br>
</div>
</div>
<br>
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