Re: [Wien] How to simulate the spin reorientation in the magnetic study

[Abderrahmane Reggad]

Thanks Mr Victor for the clarification because I was wondering if I am not
able to ask good questions.

I am from Algeria and  I am working on the antiferromagnetism in some
materials and I wanted to know how to simulate magnetic phase transition
with spin reorientation.

Thank you for the link of magnetism


-- 
Mr: A.Reggad
Laboratoire de Génie Physique
Université Ibn Khaldoun - Tiaret
Algerie
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Re: [Wien] How to simulate the spin reorientation in the magnetic study

[Víctor Luaña Cabal]

On Thu, Jun 16, 2016 at 05:49:54PM +0100, Abderrahmane Reggad wrote:
> Thanks Mr Victor for the advise, but right now I need a special workshop
> that talk about my interesting.

Mr. A,

Forgive me, but northern spaniards (like me) use to be quite informal
in our conversation. May I ask where the A. comes from?

I assume from your signature that you are working to get doctorship
or similar.

In  you find a
conference on magnetism. This corresponds to the talk by K. Schwarz
. Check it carefully.

Prof. Karlheinz Schwarz, apart from the founder of the wien2k group
was a postdoc with John C. Slater himself. May I provide you a better
recomendation?

Enjoy,
  Víctor Luaña
--
 .  ."The hardest part in solving a problem is recognizing
/ `' \   its existence. Learning the causes CAN be the road to
   /(o)(o)\  the solution."
  /`. \/ .'\  -- ¿?
 /   '`'`   \ "Lo mediocre es peor que lo bueno, pero también es peor
 |  \'`'`/  | que lo malo, porque la mediocridad no es un grado, es una
 |  |'`'`|  | actitud"
  \/`'`'`'\/  -- Jorge Wasenberg, 2015
===(((==)))==+=
! Dr.Víctor Luaña, in silico chemist & prof. ! Mediocre is worse than
! Departamento de Química Física y Analítica ! good, but it is also
! Universidad de Oviedo, 33006-Oviedo, Spain ! worse than bad, because
! e-mail:   vic...@fluor.quimica.uniovi.es   ! mediocrity is not a grade,
! phone: +34-985-103491  fax: +34-985-103125 ! it is an attitude
++
 GroupPage : http://azufre.quimica.uniovi.es/
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Re: [Wien] How to simulate the spin reorientation in the magnetic study

[Abderrahmane Reggad]

Thanks Mr Victor for the advise, but right now I need a special workshop
that talk about my interesting.

thanks again


-- 
Mr: A.Reggad
Laboratoire de Génie Physique
Université Ibn Khaldoun - Tiaret
Algerie
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Re: [Wien] How to simulate the spin reorientation in the magnetic study

[Víctor Luaña Cabal]

On Thu, Jun 16, 2016 at 12:41:49PM +0100, Abderrahmane Reggad wrote:
> Thanks Mr Victor for your reply
> 
> I have learned from the literature that spin-orbit coupling is involved in
> the spin orientation .
> 
> Even for a ferromagnetic or a antiferromagnetic state , the spins have
> different orientations. How can we determine the orientation of the spins
> according to the use of the spin-orbit coupling ?

My best advise for you is: examine the tutorial materials
created for wien2k and try to learn from there. See
 where you have lots of
materials to learn. The ones for the 2016 school at McMaster is now
accessible. Next time perhaps you will be able to ask some very good
questions.

Have a good time studying,
  Dr. Víctor Luaña
--
 .  ."Research is to see what everybody else has seen, and to
/ `' \   think what nobody else has thought"-- Albert Szent-Gyorgi
   /(o)(o)\  
  /`. \/ .'\  "Lo mediocre es peor que lo bueno, pero también es peor
 /   '`'`   \ que lo malo, porque la mediocridad no es un grado, es una
 |  \'`'`/  | actitud" -- Jorge Wasenberg, 2015
 |  |'`'`|  | (Mediocre is worse than good, but it is also worse than
  \/`'`'`'\/  bad, because mediocrity is not a grade, it is an attitude)
===(((==)))==+=
! Dr.Víctor Luaña, in silico chemist & prof. !
! Departamento de Química Física y Analítica !
! Universidad de Oviedo, 33006-Oviedo, Spain !
! e-mail:   vic...@fluor.quimica.uniovi.es   !
! phone: +34-985-103491  fax: +34-985-103125 !
++
 GroupPage : http://azufre.quimica.uniovi.es/ 
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Re: [Wien] How to simulate the spin reorientation in the magnetic study

[Abderrahmane Reggad]

Thanks Mr Victor for your reply

I have learned from the literature that spin-orbit coupling is involved in
the spin orientation .

Even for a ferromagnetic or a antiferromagnetic state , the spins have
different orientations. How can we determine the orientation of the spins
according to the use of the spin-orbit coupling ?

Best regards

-- 
Mr: A.Reggad
Laboratoire de Génie Physique
Université Ibn Khaldoun - Tiaret
Algerie
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Re: [Wien] How to simulate the spin reorientation in the magnetic study

[Víctor Luaña Cabal]

On Wed, Jun 15, 2016 at 07:50:55PM +0100, Abderrahmane Reggad wrote:
> 
> we know that the spin reorientation in the magnetic structure has an effect
> on the physicak properties of materials.
> 
> How to simulate that using the wien2k code

That's not a particular issue on wien2k. That's a problem of coupling
spins in your system, be it a molecule, a crystal or any other type
of system.

In the case of a crystal you are interested in the type of magnetism,
which is the result of the coupling of spins. In wien2k you decide
the crystal cell to explore and define the type of magnetism for your
atructure.

Just to mention some simple sources to start:



Notice the vec{j}=\vec{l}+\vec{s}, so it includes the orbital and
spinorial moments of the electron.

In the case of light atoms and impurities on solids you will see
an independent coupling of \vec{l}'s to form \vec{L}, and \vec{s}'s
to form \vec{S} before finally \vec{L} and \vec{S} couple to form the
total \vec{J} momentum-



Best regards,
  Víctor Luaña

--
 .  ."El sabio siempre quiere aprender, el ignorante siempre
/ `' \   quiere enseñar" (-- refranero )
   /(o)(o)\  ~The wise always wants to learn, teach the ignorant always wants~
  /`. \/ .'\  "Lo mediocre es peor que lo bueno, pero también es peor
 /   '`'`   \ que lo malo, porque la mediocridad no es un grado, es una
 |  \'`'`/  | actitud" -- Jorge Wasenberg, 2015
 |  |'`'`|  | ~Mediocre is worse than good, but it is also worse than
  \/`'`'`'\/  bad, because mediocrity is not a grade, it is an attitude~
===(((==)))==+=
! Dr.Víctor Luaña, in silico chemist & prof. !
! Departamento de Química Física y Analítica !
! Universidad de Oviedo, 33006-Oviedo, Spain ! 
! e-mail:    !
! phone: +34-985-103491  fax: +34-985-103125 !
++
 GroupPage: 
 Articles:  
 git-hub:   
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[Wien] How to simulate the spin reorientation in the magnetic study

[Abderrahmane Reggad]

Dear wien2k users


we know that the spin reorientation in the magnetic structure has an effect
on the physicak properties of materials.

How to simulate that using the wien2k code

Best regards
-- 
Mr: A.Reggad
Laboratoire de Génie Physique
Université Ibn Khaldoun - Tiaret
Algerie
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