2003-01-20 05:58:50 +08:00
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!
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! Copyright (C) 2001 PWSCF group
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! This file is distributed under the terms of the
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! GNU General Public License. See the file `License'
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! in the root directory of the present distribution,
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! or http://www.gnu.org/copyleft/gpl.txt .
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!
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!-----------------------------------------------------------------------
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2003-02-08 00:04:36 +08:00
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subroutine remove_atomic_rho
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2003-01-20 05:58:50 +08:00
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!-----------------------------------------------------------------------
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#include "machine.h"
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2003-02-08 00:04:36 +08:00
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use pwcom
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2003-01-20 05:58:50 +08:00
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implicit none
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2003-02-08 00:04:36 +08:00
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integer :: ir
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2003-01-20 05:58:50 +08:00
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! do-loop variable on FFT grid
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2003-02-08 00:04:36 +08:00
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real(kind=DP), allocatable :: work (:)
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real(kind=DP) :: charge
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2003-01-20 05:58:50 +08:00
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! workspace, is the difference between t
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! charge density and the atomic one at t
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! charge
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2003-02-08 00:04:36 +08:00
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allocate (work( nrxx))
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2003-01-20 05:58:50 +08:00
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!
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2003-02-08 00:04:36 +08:00
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call setv (nrxx, 0.d0, work, 1)
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if (lsda) call error ('rmv_at_rho', 'lsda not allowed', 1)
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2003-01-20 05:58:50 +08:00
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2003-02-08 00:04:36 +08:00
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write (6, '(/5x,"remove atomic charge density from scf rho")')
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2003-01-20 05:58:50 +08:00
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!
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! subtract the old atomic charge density
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!
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2003-02-08 00:04:36 +08:00
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call atomic_rho (work, nspin)
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call DSCAL (nrxx, - 1.0d0, work, 1)
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call DAXPY (nrxx, + 1.0d0, rho, 1, work, 1)
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2003-01-20 05:58:50 +08:00
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2003-02-08 00:04:36 +08:00
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call io_pot ( + 1, output_drho, work, nspin)
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2003-01-20 05:58:50 +08:00
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2003-02-08 00:04:36 +08:00
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deallocate(work)
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return
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2003-01-20 05:58:50 +08:00
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end subroutine remove_atomic_rho
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