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Re: [abinit-forum] problem in magnetism


Chronological Thread 
  • From: Xavier Gonze <gonze@pcpm.ucl.ac.be>
  • To: forum@abinit.org
  • Subject: Re: [abinit-forum] problem in magnetism
  • Date: Fri, 8 Dec 2006 12:43:28 +0100

Dear Javad,

In Wien2k, do you include the spin-orbit interaction ?

Xavier

On 08 Dec 2006, at 10:29, Javad hashemifar wrote:

Many thanks to Matthieu and zzzhong for your kind help. I am going to
test PAW ability of Abinit to see whether it could solve this problem.
Best regards
Javad Hashemifar

On 12/8/06, Matthieu Verstraete <mjv500@york.ac.uk> wrote:

Ok, I see what you are looking at better now. It depends on what you want
to study and quantify. The difference almost certainly comes from the
pseudopotential approximation, and possibly could be lesser for other
psps, e.g. PAW (I would definitely give this a try). Otherwise, if you
need the splitting (which could be quite bad in DFT anyway without LDA+U
or something), you'll have to stick to all electron. How much slower is
wien2k?

A final note, it looks like the up channel is shifted down in energy while
the down is shifted up. This feels like a difference in Fermi level or
broadening btw wien and abinit (especially as the down has 0 DOS at Ef, so
it's chemical potential could be somewhat arbitrary, although the lowest
states align nicely), or a difference in the way the spin-dep-GGA is
implemented. Possible?

Matthieu

--
================================================================
Dr. Matthieu Verstraete mailto:mjv500@york.ac.uk
Dept. of Physics, University of York, tel: +44 1904 43 22 08
Heslington, YO10 5DD York, United Kingdom fax: +44 1904 43 22 14



--
======================================
Seyed Javad Hashemifar, Ph.D.
[current:]
Tel:+49-203-3794743 Fax:+49-203-3794742
Fachbereich Physik (AG Kratzer), Universitat Duisburg-Essen
47048 Dusiburg, Germany
[permanent:]
Tel: +98-311-3912375 Fax: +98-311-3912376
Physics Department, Isfahan University of Technology
84156 Isfahan, Iran
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