<div dir="ltr">Or is it like below;<br><div> (1) GGA & then HF with alpha =0.05 for energy & voltage</div><div> (2) GGA and then mBJ for electronic band gap</div><div><br></div><div>Looking forward to listen from you.</div><div><br></div><div>with regards,</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 10 Feb 2023 at 15:12, shamik chakrabarti <<a href="mailto:shamik15041981@gmail.com">shamik15041981@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 Wien2k users,<div><br></div><div> I am simulating a spinel cubic structure with formula ABCO4 with 56 atoms / unit cell. I have achieved accurate voltage prediction with alpha 0.05. However, during DOS I have increased the k-mesh to 8 k points. With this the band gap is coming as 0.25 eV which seems to be very less (although we do not have experimental data yet). My query is should I run mBJ as a perturbation after getting the convergence with hf with alpha =0.05?</div><div><br></div><div>with regards, . <br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="font-size:small">Dr. Shamik Chakrabarti</div><div style="font-size:small">Research Fellow </div><div style="font-size:small">Department of Physics</div><div style="font-size:small">Indian Institute of Technology Patna</div><div style="font-size:small">Bihta-801103</div><div style="font-size:small">Patna</div><div style="font-size:small">Bihar, India</div></div></div></div></div></div></div></div></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="font-size:small">Dr. Shamik Chakrabarti</div><div style="font-size:small">Research Fellow </div><div style="font-size:small">Department of Physics</div><div style="font-size:small">Indian Institute of Technology Patna</div><div style="font-size:small">Bihta-801103</div><div style="font-size:small">Patna</div><div style="font-size:small">Bihar, India</div></div></div></div></div></div></div></div>