[gpaw-users] Full/half core hole with Hubbard U
Jens Jørgen Mortensen
jjmo at dtu.dk
Fri Jan 11 10:13:16 CET 2019
On 1/10/19 4:09 PM, Chang Liu via gpaw-users wrote:
>
> Hi,
>
>
> Is it possible to run a calculation with a core hole and Hubbard U
> applied to the same atom? The PAW calculator object in my script reads:
>
>
> calc = GPAW(...
>
> setups={6:'fch1s','Fe': ':d,3.5'}
>
> ...)
>
> Atom number 6 is an Fe atom with a full core hole and I intend to
> apply a Hubbard U of 3.5 eV to the d-orbital of all Fe atoms since the
> material is an iron oxide. However, in the output, I found this:
>
Maybe try:
setups={6: 'fch1s:d,3.5', 'Fe': ':d,3.5'}
Jens Jørgen
> Fe-setup:
> name: Iron
> id: 03b08f0796d5ca2ec7ac928febd9fbcf
> Z: 26
> valence: 8
> core: 18
> charge: 0.0
> Hubbard U: 3.500000 eV (l=2, scale=True)
> file: /home/c/chliu/pfs/gpaw-ase/gpaw-setups-0.8.7929/Fe.RPBE.gz
> cutoffs: 1.06(comp), 2.06(filt), 2.67(core), lmax=2
> valence states:
> energy radius
> 4s(2.00) -5.218 1.164
> 4p(0.00) -1.321 1.058
> 3d(6.00) -7.447 1.058
> *s 21.993 1.164
> *p 25.890 1.058
> *d 19.764 1.058
> Using partial waves for Fe as LCAO basis
>
> Fe-setup (1.0 core hole):
> name: Iron
> id: 2ec09d83cee58943bdaf59106be4c8da
> Z: 26
> valence: 8
> core: 17.0
> charge: 1.0
> file: /home/c/chliu/pfs/gpaw-ase/gpaw-setups-0.8.7929/Fe.fch1s.RPBE
> cutoffs: 1.06(comp), 2.06(filt), 2.43(core), lmax=2
> valence states:
> energy radius
> 4s(2.00) -14.219 1.164
> 4p(0.00) -8.631 1.058
> 3d(6.00) -23.133 1.058
> *s 12.993 1.164
> *p 18.581 1.058
> *d 4.079 1.058
> Using partial waves for Fe as LCAO basis
>
> It seems Hubbard U is not applied to the core-ionized atom. Is there a
> way to apply U to the core-ionized Fe atom? Thanks.
>
>
> Best wishes,
> Chang Liu
> ----------------------------------------------------------
> Chang Liu
> PhD student
> Fysikum, Albanova, Stockholm University
> S-106 91 Stockholm, Sweden
> +46 767159891
> http://xsolasgroup.fysik.su.se/
>
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