Re: [Wien] possible bug in orb

2018-10-10 Thread Peter Blaha

Thanks for the report.

However, I would call this not a bug, but a "feature" (or maybe the bug 
is that it does not complain when s or p electrons are selected).


It does not make sense to apply LDA+U to s or p electrons. They are 
always delocalized (non-correlated) electrons.



Am 10.10.2018 um 19:50 schrieb Kateryna Foyevtsova:

Dear wien2k developers,

I think there is a bug in orb which shows up when a Hubbard U is being
applied to L=1 (p) electrons.

In Vcalc.f, no value is assigned for F(2) for the L=1 case. This will give
that, for example, in a case of case.inorb like the one below:

   1  3  0 nmod, natorb, ipr
PRATT  1.0BROYD/PRATT, mixing
   2 1 2  iatom nlorb, lorb
   3 1 1
   4 1 1
   1  nsic 0..AFM, 1..SIC, 2..HFM
0.882 0.074
0.000 0.000
0.000 0.000

the atoms 3 and 4 will contribute non-zero EORB as well as will have some
non-zero orbital potential matrices, because for these atoms the code is
going to use F(2) taken over from atom 2.

Thank you,
Kateryna





--
--
Peter BLAHA, Inst.f. Materials Chemistry, TU Vienna, A-1060 Vienna
Phone: +43-1-58801-165300 FAX: +43-1-58801-165982
Email: bl...@theochem.tuwien.ac.atWIEN2k: http://www.wien2k.at
WWW: 
http://www.imc.tuwien.ac.at/tc_blaha- 


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[Wien] possible bug in orb

2018-10-10 Thread Kateryna Foyevtsova
Dear wien2k developers,

I think there is a bug in orb which shows up when a Hubbard U is being
applied to L=1 (p) electrons.

In Vcalc.f, no value is assigned for F(2) for the L=1 case. This will give
that, for example, in a case of case.inorb like the one below:

  1  3  0 nmod, natorb, ipr
PRATT  1.0BROYD/PRATT, mixing
  2 1 2  iatom nlorb, lorb
  3 1 1
  4 1 1
  1  nsic 0..AFM, 1..SIC, 2..HFM
   0.882 0.074
   0.000 0.000
   0.000 0.000

the atoms 3 and 4 will contribute non-zero EORB as well as will have some
non-zero orbital potential matrices, because for these atoms the code is
going to use F(2) taken over from atom 2.

Thank you,
Kateryna



-- 
Kateryna Foyevtsova
Research Associate
Stewart Blusson Quantum Matter Institute
The University of British Columbia | Vancouver
261C - 2355 East Mall | Vancouver BC | V6T 1Z4 Canada
foyevts...@phas.ubc.ca
www.sbqmi.ubc.ca
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