<div dir="ltr"><div>'nscf' calculations also compute the Fermi energy and occupations. If the number of bands (nbnd) you specify is smaller than the number of occupied bands, you get an error.</div><div><br></div><div>Paolo<br></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Sep 15, 2020 at 10:29 AM SHIVANI SAINI <<a href="mailto:rss2017002@iiita.ac.in">rss2017002@iiita.ac.in</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"><div>Dear all,</div><div><br></div><div><div><div><div><span><div style="padding-right:0px"><span><div>I
am trying to calculate the electronic properties of van der Waals
heterostructure, calculations go smoothly for self consistent (<a href="https://www.researchgate.net/deref/http%3A%2F%2Fscf.in" rel="noopener" target="_blank">scf.in</a>)
but for nscf calculations I encountered an error "Error in
routine efermig (1): internal error, cannot bracket Ef". i tried to
play with nbnd and cutoff energy and also with mixing beta but every
time i got the same error. </div><div>I am attaching the <a href="https://www.researchgate.net/deref/http%3A%2F%2Fnscf.in" rel="noopener" target="_blank">nscf.in</a> and nscf.out file herewith, please help me to resolve the issue.</div></span></div></span></div></div></div><div><div><div><div><div><div><div><a href="https://www.researchgate.net/post/Problem_in_calculations_of_nscf_for_vdW_structure?_ec=topicPostOverviewAuthoredQuestions&isAnswerFieldFocused=true&_sg=yhR_UICF6NLex8DhvKQXc9mzE-c58CVPKXDFWxsLRLW2ZfL1hTZvDWR6iCzLPSfRVw" target="_blank"><span><br></span></a></div></div></div></div></div></div></div></div><div><br></div><div><br></div><div><br></div><div><br></div><div>Regards:<br></div><div><div dir="ltr"><div dir="ltr"><div><div><div>Shivani Saini<br></div>Research Scholar<br></div>Dept. of Applied Science<br></div>Indian Institute of Information Technology, Allahabad <br></div></div></div></div>
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