<div dir="ltr"><div dir="ltr"><div dir="ltr">Dear Dr. F. Tran<br></div><div dir="ltr"><br></div><div>Thank you very much for your reply.</div><div><br></div><div dir="ltr">If I want to compare the convergence of the PBE potential </div><div dir="ltr">with MBJLDA potential then what exactly needed to be shown?<br></div><div dir="ltr"><br></div><div>with regards,</div><div>Bikash.</div><div dir="ltr"><br></div></div></div><div hspace="streak-pt-mark" style="max-height:1px"><img alt="" style="width:0px;max-height:0px;overflow:hidden" src="https://mailfoogae.appspot.com/t?sender=aYmlrYXNoLnBhdHJhQG5pc2VyLmFjLmlu&type=zerocontent&guid=36d989d7-8bbc-4787-b5e0-8cf9feea3ee8"><font color="#ffffff" size="1">ᐧ</font></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Jun 8, 2019 at 11:39 AM <<a href="mailto:tran@theochem.tuwien.ac.at">tran@theochem.tuwien.ac.at</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">Hi,<br>
<br>
Yes, you can test the convergence parameters (number of k-points, etc.)<br>
by looking at the band gap. Since MBJ uses the kinetic-energy density,<br>
it is recommended to use a IFFt factor of 4 (3rd line in case.in0).<br>
<br>
I am not sure to understand what you mean with comparing the<br>
convergence of the MBJ and PBE.<br>
<br>
F. Tran<br>
<br>
On Saturday 2019-06-08 07:12, Bikash Patra wrote:<br>
<br>
>Date: Sat, 8 Jun 2019 07:12:17<br>
>From: Bikash Patra <<a href="mailto:bikash.patra@niser.ac.in" target="_blank">bikash.patra@niser.ac.in</a>><br>
>Reply-To: A Mailing list for WIEN2k users <<a href="mailto:wien@zeus.theochem.tuwien.ac.at" target="_blank">wien@zeus.theochem.tuwien.ac.at</a>><br>
>To: <a href="mailto:wien@zeus.theochem.tuwien.ac.at" target="_blank">wien@zeus.theochem.tuwien.ac.at</a><br>
>Subject: [Wien] Convergence test for MBJ potential.<br>
><br>
>Dear wien2k users,<br>
><br>
>I want to compare the potential convergence of the MBJ(<a href="https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.102.226401" rel="noreferrer" target="_blank">https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.102.226401</a>)<br>
>and PBE functional. Now MBJ potential does not correspond to any XC functional. For calculation,<br>
>we use LDA XC functional. That's why MBJ calculations can never be self consistence<br>
>with respect to the total energy. Is it possible to do a convergence test of band gaps with <br>
>increasing K points or plane wave cut-off? How to compare the convergence<br>
>of the potential of the MBJ and PBE case?<br>
><br>
>with regards,<br>
>Bikash Patra,<br>
>NISER, Bhubaneswar, INDIA<br>
><br>
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><br>
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