<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;color:#000000">Unfortunately the Fermi level in Wien2k (and all other levels) are not referenced to vacuum. The reason is somewhat technical, and involves subtraction of a mean inner potential to avoid some numerical issues. To get a reference you will need to do a surface calculation with a true vacuum and use that. Most people do not bother and just reference to the Fermi level/energy.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Oct 16, 2020 at 10:14 AM Mohad Abbasnejad <<a href="mailto:mohaddeseh.abbasnejad@gmail.com">mohaddeseh.abbasnejad@gmail.com</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"><div dir="ltr">Dear experts,<div><br></div><div>I was wondering if you guide me whether the Fermi energy is referred to the vacuum level or not?</div><div>In other words, how is it possible to obtain the vacuum level in WIEN2k calculations?</div><div><br></div><div>Thanks in advance for your help.</div><div><br></div><div>Regards,</div><div>Mohaddeseh<br clear="all"><div><br></div>-- <br><div dir="ltr">---------------------------------------------------------<br>Mohaddeseh Abbasnejad, <br>Assistant Professor of Physics,<br>Faculty of Physics, <br>Shahid Bahonar University of Kerman,<br>Kerman, Iran<br>P.O. Box 76169-133<br>Tel: +98 34 31322199<br>Fax: +98 34 33257434<br>Cellphone: +98 917 731 7514<br>E-Mail:     <a href="mailto:mohaddeseh.abbasnejad@gmail.com" target="_blank">mohaddeseh.abbasnejad@gmail.com</a><br>Website:  <a href="https://urldefense.com/v3/__http://academicstaff.uk.ac.ir/moabbasnejad__;!!Dq0X2DkFhyF93HkjWTBQKhk!Cvx9xcf_wkdaKZcEQxRxJunpYhi-kml6ZjpHI6SQUnD5B8MJzx2cDBSuaCdDEB30t4gy0Q$" target="_blank">academicstaff.uk.ac.ir/moabbasnejad</a> <br>---------------------------------------------------------<br><br></div></div></div>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr">Professor Laurence Marks<br>Department of Materials Science and Engineering<br>Northwestern University<br><a href="http://www.numis.northwestern.edu/" target="_blank">www.numis.northwestern.edu</a><div>Corrosion in 4D: <a href="http://www.numis.northwestern.edu/MURI" target="_blank">www.numis.northwestern.edu/MURI</a><br>Co-Editor, Acta Cryst A<br>"Research is to see what everybody else has seen, and to think what nobody else has thought"<br>Albert Szent-Gyorgi</div></div></div>