<div><span class="ppt" id="_user_pw_forum@pwscf.org">Dear all,</span></div>
<div><span class="ppt"></span> </div>
<div><span class="ppt">I had a little trouble with band calculation for a metallic material, so I revisited example01.</span></div>
<div><span class="ppt"></span> </div>
<div><span class="ppt">When I run the "bands" calculation for Al, I found that the results depend on the setting</span></div>
<div><span class="ppt">of "nbnd". I tried nbnd=8 (the value used in the example) and nbnd=10. The bands below</span></div>
<div><span class="ppt">the Fermi level are the same in </span><span class="ppt">both cases, </span><span class="ppt">however, some of the empty bands are clearly</span></div>
<div><span class="ppt">different.</span></div>
<div><span class="ppt"></span> </div>
<div>I am puzzled by this. Is there any physics that I missed?<br><br>-Peter</div>