quantum-espresso/PW/tabd.f90

53 lines
1.3 KiB
Fortran

!
! Copyright (C) 2001 PWSCF group
! This file is distributed under the terms of the
! GNU General Public License. See the file `License'
! in the root directory of the present distribution,
! or http://www.gnu.org/copyleft/gpl.txt .
!
!-----------------------------------------------------------------------
subroutine tabd (nt, occ_loc)
!-----------------------------------------------------------------------
!
! This routine is a table (far from being complete) for the total number
! of localized electrons in transition metals or rare earths
! (PPs usually are built on non physical configurations)
!
use pwcom
implicit none
real(kind=DP) :: occ_loc
! output: the total number of d electrons
integer :: nt
!
! TRANSITION METALS
!
if (psd (nt) .eq.'Mn') then
occ_loc = 5.d0
elseif (psd (nt) .eq.'Fe') then
occ_loc = 6.d0
elseif (psd (nt) .eq.'Co') then
occ_loc = 9.d0
elseif (psd (nt) .eq.'Ni') then
occ_loc = 8.d0
elseif (psd (nt) .eq.'Cu') then
occ_loc = 10.d0
!
! RARE EARTHS
!
elseif (psd (nt) .eq.'Ce') then
occ_loc = 2.d0
!
! OTHER ELEMENTS
!
elseif (psd (nt) .eq.'H') then
occ_loc = 1.d0
else
occ_loc = 0.d0
call errore ('tabd', 'pseudopotential not yet inserted', 1)
endif
return
end subroutine tabd