[Pw_forum] add or subtract electron

Stefano de Gironcoli degironc at sissa.it
Wed Aug 5 11:07:08 CEST 2009


Cococcioni M, de Gironcoli S
Linear response approach to the calculation of the effective interaction 
parameters in the LDA+U method
Phys. Rev. B *71*, 035105 (2005)


ali kazempour wrote:
> Dear users
> Does anyone knows that how possible is the computation of total energy 
> of a system with same total number of electron when we add a electron 
> to the orbital OR subtract electron from that orbital? I mean  how we  
> put for example 1 additional electron to the orbital d.
> I want this to compute  U(hubbard)  from
> U=E(dn+1) + E(dn1)-2E(dn)
> thanks a lot
>
> Ali Kazempour
> Physics department, Isfahan University of Technology
> 84156 Isfahan, Iran. Tel-1: +98 311 391 3733
> Fax: +98 311 391 2376 Tel-2: +98 311 391 2375
>
>
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