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https://github.com/LCPQ/quantum_package
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62 lines
1.4 KiB
Fortran
62 lines
1.4 KiB
Fortran
program scf
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BEGIN_DOC
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! Produce `Hartree_Fock` MO orbital
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! output: mo_basis.mo_tot_num mo_basis.mo_label mo_basis.ao_md5 mo_basis.mo_coef mo_basis.mo_occ
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! output: hartree_fock.energy
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! optional: mo_basis.mo_coef
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END_DOC
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call create_guess
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call orthonormalize_mos
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call run
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end
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subroutine create_guess
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implicit none
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BEGIN_DOC
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! Create a MO guess if no MOs are present in the EZFIO directory
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END_DOC
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logical :: exists
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PROVIDE ezfio_filename
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call ezfio_has_mo_basis_mo_coef(exists)
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if (.not.exists) then
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if (mo_guess_type == "HCore") then
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mo_coef = ao_ortho_lowdin_coef
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TOUCH mo_coef
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mo_label = 'Guess'
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call mo_as_eigvectors_of_mo_matrix(mo_mono_elec_integral,size(mo_mono_elec_integral,1),size(mo_mono_elec_integral,2),mo_label,1,.false.)
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SOFT_TOUCH mo_coef mo_label
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else if (mo_guess_type == "Huckel") then
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call huckel_guess
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else
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print *, 'Unrecognized MO guess type : '//mo_guess_type
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stop 1
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endif
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endif
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end
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subroutine run
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BEGIN_DOC
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! Run SCF calculation
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END_DOC
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use bitmasks
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implicit none
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double precision :: SCF_energy_before,SCF_energy_after,diag_H_mat_elem
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double precision :: EHF
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integer :: i_it, i, j, k
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EHF = HF_energy
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mo_label = "Canonical"
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! Choose SCF algorithm
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! call damping_SCF ! Deprecated routine
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call Roothaan_Hall_SCF
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end
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