small partial core

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mina
Posts: 110
Joined: Mon Sep 27, 2010 8:44 am

small partial core

Post by mina » Mon Dec 06, 2010 3:25 pm

Hello,
i am using abinit to calculate magnetization of cobalt i have done my job but i think my result are unphysical.
but i studied from paper that magnetization is strongly dependent to npc(no partial core),spc,mpc,bpc.but i can't underestand them in abintit.how can i choose them in abinit? could you please explain about them?
thank you.

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jzwanzig
Posts: 504
Joined: Mon Aug 17, 2009 9:25 am

Re: small partial core

Post by jzwanzig » Mon Dec 06, 2010 4:22 pm

What pseudopotential or PAW data set are you using now?
Josef W. Zwanziger
Professor, Department of Chemistry
Canada Research Chair in NMR Studies of Materials
Dalhousie University
Halifax, NS B3H 4J3 Canada
jzwanzig@gmail.com

mina
Posts: 110
Joined: Mon Sep 27, 2010 8:44 am

Re: small partial core

Post by mina » Tue Dec 07, 2010 6:50 am

Hello,
Thank you,as i said i am calculating magnetization of cobalt and i use HGH pesudopotential.27co.9.hgh.
Thank you for your help.

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jzwanzig
Posts: 504
Joined: Mon Aug 17, 2009 9:25 am

Re: small partial core

Post by jzwanzig » Tue Dec 07, 2010 3:17 pm

well, I have no experience with HGH so I may not be able to help. Have you tried using PAW? It should work well for this problem.
Josef W. Zwanziger
Professor, Department of Chemistry
Canada Research Chair in NMR Studies of Materials
Dalhousie University
Halifax, NS B3H 4J3 Canada
jzwanzig@gmail.com

mverstra
Posts: 655
Joined: Wed Aug 19, 2009 12:01 pm

Re: small partial core

Post by mverstra » Sat Feb 26, 2011 9:46 am

1) You need to explain what you mean by

npc(no partial core),spc,mpc,bpc

2) For many HGH potentials you can choose semicore states in the valence. If you need more you'll have to make the potential yourself. Non-linear core correction improves things too, and this is also easier to include in PAW, so I would follow Joe's advice

Matthieu
Matthieu Verstraete
University of Liege, Belgium

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