<div dir="auto">Yes, I have done LDA/GGA + U + SOC. And both are predicting the ground state properly. But my query is related to the magnetic moment. Why it is magnetic in GGA but non-magnetic in LDA for U values I have suggested.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">शुक्र, 10 अप्रैल 2020, 15:37 को Xavier Rocquefelte <<a href="mailto:xavier.rocquefelte@univ-rennes1.fr">xavier.rocquefelte@univ-rennes1.fr</a>> ने लिखा:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<p>One more comment, LDA+U (+SOC) will be better than everything in
a DFT level, because of iridium. <br>
</p>
<p><br>
</p>
<div>Le 10/04/2020 à 12:02, Xavier
Rocquefelte a écrit :<br>
</div>
<blockquote type="cite">
<p>I really recommend to look carefully at the litterature of this
system. <br>
</p>
<p>Using mbj or hybrid will work but for what? <br>
</p>
<p>In addition, the states at the Fermi to be properly described
need something you will not have in your functional. <br>
</p>
<p>Cheers</p>
<p>Xavier <br>
</p>
<p><br>
</p>
<div>Le 10/04/2020 à 12:00, Wasim Raja
Mondal a écrit :<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">You can use mbj and hybrid functional. It is
straight forward to include spin-orbit in such
calculations.
<div><br>
</div>
<div>Of course, DMFT will be the best solution. For that,
you can use packages like TRIQS, Kerstn's full LDA+DMFT
code is available in his website.</div>
<div><br>
</div>
<div><a href="https://triqs.github.io/triqs/latest/" target="_blank" rel="noreferrer">https://triqs.github.io/triqs/latest/</a><br>
</div>
<div><br>
</div>
<div><a href="http://hauleweb.rutgers.edu/tutorials/" target="_blank" rel="noreferrer">http://hauleweb.rutgers.edu/tutorials/</a><br>
</div>
</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Apr 10, 2020 at 5:46
AM Xavier Rocquefelte <<a href="mailto:xavier.rocquefelte@univ-rennes1.fr" target="_blank" rel="noreferrer">xavier.rocquefelte@univ-rennes1.fr</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
<div>
<p>For such a system DFT is not sufficient. You must use
DMFT. <br>
</p>
<p>In addition, you should include spin-orbit coupling.</p>
<p>It is thus a very difficult situation because DMFT+SOC
is not trivial at all. <br>
</p>
<p>Cheers</p>
<p>Xavier <br>
</p>
<p><br>
</p>
<div>Le 10/04/2020 à 11:39, Amit Chauhan ph17d008 a
écrit :<br>
</div>
<blockquote type="cite">
<div dir="auto">Dear All:
<div dir="auto"><br>
</div>
<div dir="auto">I am working on a strongly
spin-orbital coupled d^5 system, SrIrO3
(orthorhombic). It's a Dirac semimetal with weakly
correlated (U=0.3-0.4 eV) non-magnetic ground state.
With GGA+U, for U=1eV, the system is showing a
magnetic metal phase but with LDA it is showing
complely non-magnetic state. I also checked for U=2
eV, but still GGA gave a magnetic solution but LDA
remains non-magnetic. I have also used a very fine
k-mesh (16x16x12) but still LDA remains
non-magnetic. I also checked it with PAW
pseudopotential method as implemented in VASP, for
both GGA and LDA, and results were consistent with
the full potential GGA. Why full potential LDA is
not showing the magnetic state??. I have properly
checked the inorb and indmc files and the parameters
are fine.</div>
<div dir="auto"><br>
</div>
<div dir="auto">Regards,</div>
<div dir="auto"><br>
</div>
<div dir="auto">Amit Chauhan</div>
<div dir="auto">Research Scholar</div>
<div dir="auto">IIT Madras</div>
<div dir="auto"><br>
</div>
</div>
<br>
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