[Wien] U & J values for Cobalt
Dr. Sharat Chandra
sharat at igcar.ernet.in
Wed Nov 24 12:37:31 CET 2004
Dear Valerio
Thanks a lot.
Regards
Sharat
On Wed, 24 Nov 2004, Valerio Bellini wrote:
> Dear Sharat,
>
> Check this reference,
>
> M. M. Steiner, R. C. Albers, and L. J. Sham, Phys. Rev. B
> 45, 13 272 (1992).
>
> >Also, if I get the U and J values for Co in some other configuration, can
> >those values be used for my calculations?
>
> I don't have a clear answer to that..
> there is experimental evidence that these parameters might change at the
> surface of a material, but anyhow it is not clear which method is the
> best to calculate
> them, i.e. constrained DFT? or as integrals mediated screened via the
> dielectric function?
> or maybe other.., so that in practice you might tune them a little to
> your system.
>
> Regards,
> Valerio
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