<div dir="ltr">Dear Giuseppe, <div><br></div><div>Thanks for this. </div><div><br></div><div>Regards </div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Apr 28, 2014 at 4:26 PM, Giuseppe Mattioli <span dir="ltr"><<a href="mailto:giuseppe.mattioli@ism.cnr.it" target="_blank">giuseppe.mattioli@ism.cnr.it</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
Dear Zarah<br>
It's a kind of semiempirical (not a kind of magic, anyway...:-)), but<br>
when you deal with metal oxides you may try to correct with +U the O<br>
2p shell. Sometimes the DFT+U(metal,oxygen) approach helps to reach<br>
convergence more smoothly than DFT+U(metal). You may want to look at<br>
<br>
Himmetoglu, B.; Floris, A.; de Gironcoli, S.; Cococcioni, M. Int. J.<br>
Quantum Chem. 2014, 114, 14-49.<br>
Mattioli, G.; Alippi, P.; Filippone, F.; Caminiti, R.; Amore<br>
Bonapasta, A. J. Phys. Chem. C 2010, <a href="tel:21694-21704" value="+12169421704">21694-21704</a>, 114.<br>
<br>
HTH<br>
<br>
Giuseppe<br>
<br>
Giuseppe Mattioli<br>
ISM-CNR<br>
Italy<br>
<div><div class="h5"><br>
Quoting Zarah Baiyee <<a href="mailto:z.baiyee@gmail.com">z.baiyee@gmail.com</a>>:<br>
<br>
> Dear All,<br>
><br>
> I am working on a perovskite system, BaFeO3, and trying to include a<br>
> hubbard correction for the Fe cation, yet struggling with convergence. I<br>
> have read on previous posts, that convergence can be difficult using the<br>
> pbe x-change correlation, therefore I have tried both with my initial pbe<br>
> PPs and LDA PPs yet still struggling.<br>
><br>
> Please find attached, the input files any advice would be much appreciated.<br>
><br>
> Kind Regards<br>
><br>
> Zarah<br>
<br>
<br>
</div></div>--<br>
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Giuseppe Mattioli<br>
CNR - ISTITUTO DI STRUTTURA DELLA MATERIA<br>
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<br>
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