46#include "./base/base_uses.f90"
54 CHARACTER(len=*),
PARAMETER,
PRIVATE :: moduleN =
'qs_core_energies'
61 MODULE PROCEDURE calculate_ptrace_1, calculate_ptrace_gamma, calculate_ptrace_kp
81 SUBROUTINE calculate_ptrace_gamma(hmat, pmat, ecore, nspin)
84 REAL(KIND=
dp),
INTENT(OUT) :: ecore
85 INTEGER,
INTENT(IN) :: nspin
87 CHARACTER(len=*),
PARAMETER :: routineN =
'calculate_ptrace_gamma'
89 INTEGER :: handle, ispin
92 CALL timeset(routinen, handle)
97 CALL dbcsr_dot(hmat(1)%matrix, pmat(ispin)%matrix, etr)
101 CALL timestop(handle)
103 END SUBROUTINE calculate_ptrace_gamma
117 SUBROUTINE calculate_ptrace_kp(hmat, pmat, ecore, nspin)
119 TYPE(
dbcsr_p_type),
DIMENSION(:, :),
POINTER :: hmat, pmat
120 REAL(kind=
dp),
INTENT(OUT) :: ecore
121 INTEGER,
INTENT(IN) :: nspin
123 CHARACTER(len=*),
PARAMETER :: routinen =
'calculate_ptrace_kp'
125 INTEGER :: handle, ic, ispin, nc
128 CALL timeset(routinen, handle)
136 CALL dbcsr_dot(hmat(1, ic)%matrix, pmat(ispin, ic)%matrix, etr)
141 CALL timestop(handle)
143 END SUBROUTINE calculate_ptrace_kp
162 SUBROUTINE calculate_ptrace_1(h, p, ecore)
165 REAL(kind=
dp),
INTENT(OUT) :: ecore
167 CHARACTER(len=*),
PARAMETER :: routinen =
'calculate_ptrace_1'
171 CALL timeset(routinen, handle)
176 CALL timestop(handle)
178 END SUBROUTINE calculate_ptrace_1
198 E_overlap_core, atecc)
201 LOGICAL,
INTENT(IN) :: calculate_forces
202 LOGICAL,
INTENT(IN),
OPTIONAL :: molecular
203 REAL(kind=
dp),
INTENT(OUT),
OPTIONAL :: e_overlap_core
204 REAL(kind=
dp),
DIMENSION(:),
OPTIONAL :: atecc
206 CHARACTER(len=*),
PARAMETER :: routinen =
'calculate_ecore_overlap'
208 INTEGER :: atom_a, atom_b, handle, iatom, ikind, &
209 jatom, jkind, natom, nkind
210 INTEGER,
ALLOCATABLE,
DIMENSION(:) :: atom_of_kind
211 LOGICAL :: atenergy, only_molecule, use_virial
212 REAL(kind=
dp) :: aab, dab, eab, ecore_overlap, f, fab, &
214 REAL(kind=
dp),
ALLOCATABLE,
DIMENSION(:) :: alpha, radius, zeff
215 REAL(kind=
dp),
DIMENSION(3) :: deab, rab
216 REAL(kind=
dp),
DIMENSION(3, 3) :: pv_loc
221 DIMENSION(:),
POINTER :: nl_iterator
227 TYPE(
qs_kind_type),
DIMENSION(:),
POINTER :: qs_kind_set
230 CALL timeset(routinen, handle)
232 NULLIFY (atomic_kind_set)
233 NULLIFY (qs_kind_set)
237 NULLIFY (particle_set)
241 only_molecule = .false.
242 IF (
PRESENT(molecular)) only_molecule = molecular
245 atomic_kind_set=atomic_kind_set, &
246 qs_kind_set=qs_kind_set, &
247 particle_set=particle_set, &
255 nkind =
SIZE(atomic_kind_set)
256 natom =
SIZE(particle_set)
258 use_virial = virial%pv_availability .AND. (.NOT. virial%pv_numer)
260 ALLOCATE (alpha(nkind), radius(nkind), zeff(nkind))
265 IF (calculate_forces)
THEN
270 IF (
ASSOCIATED(atprop))
THEN
271 IF (atprop%energy)
THEN
279 alpha_core_charge=alpha(ikind), &
280 core_charge_radius=radius(ikind), &
284 ecore_overlap = 0.0_dp
289 CALL get_iterator_info(nl_iterator, ikind=ikind, jkind=jkind, iatom=iatom, jatom=jatom, r=rab)
290 zab = zeff(ikind)*zeff(jkind)
291 aab = alpha(ikind)*alpha(jkind)/(alpha(ikind) + alpha(jkind))
294 rab2 = rab(1)*rab(1) + rab(2)*rab(2) + rab(3)*rab(3)
295 IF (rab2 > 1.e-8_dp)
THEN
296 IF (ikind == jkind .AND. iatom == jatom)
THEN
302 eab = zab*erfc(rootaab*dab)/dab
303 ecore_overlap = ecore_overlap + f*eab
305 atprop%atecc(iatom) = atprop%atecc(iatom) + 0.5_dp*f*eab
306 atprop%atecc(jatom) = atprop%atecc(jatom) + 0.5_dp*f*eab
308 IF (
PRESENT(atecc))
THEN
309 atecc(iatom) = atecc(iatom) + 0.5_dp*f*eab
310 atecc(jatom) = atecc(jatom) + 0.5_dp*f*eab
312 IF (calculate_forces)
THEN
313 deab(:) = rab(:)*f*(eab + fab*exp(-aab*rab2))/rab2
314 atom_a = atom_of_kind(iatom)
315 atom_b = atom_of_kind(jatom)
316 force(ikind)%core_overlap(:, atom_a) = force(ikind)%core_overlap(:, atom_a) + deab(:)
317 force(jkind)%core_overlap(:, atom_b) = force(jkind)%core_overlap(:, atom_b) - deab(:)
326 DEALLOCATE (alpha, radius, zeff)
327 IF (calculate_forces)
THEN
328 DEALLOCATE (atom_of_kind)
330 IF (calculate_forces .AND. use_virial)
THEN
331 virial%pv_ecore_overlap = virial%pv_ecore_overlap + pv_loc
332 virial%pv_virial = virial%pv_virial + pv_loc
335 CALL group%sum(ecore_overlap)
337 energy%core_overlap = ecore_overlap
339 IF (
PRESENT(e_overlap_core))
THEN
340 e_overlap_core = energy%core_overlap
343 CALL timestop(handle)
358 REAL(kind=
dp),
INTENT(OUT),
OPTIONAL :: e_self_core
359 REAL(kind=
dp),
DIMENSION(:),
OPTIONAL :: atecc
361 CHARACTER(len=*),
PARAMETER :: routinen =
'calculate_ecore_self'
363 INTEGER :: handle, iatom, ikind, iparticle_local, &
364 natom, nparticle_local
365 REAL(kind=
dp) :: alpha_core_charge, ecore_self, es, zeff
371 TYPE(
qs_kind_type),
DIMENSION(:),
POINTER :: qs_kind_set
376 CALL timeset(routinen, handle)
378 CALL get_qs_env(qs_env=qs_env, atomic_kind_set=atomic_kind_set, &
379 qs_kind_set=qs_kind_set, energy=energy, atprop=atprop)
383 DO ikind = 1,
SIZE(atomic_kind_set)
385 CALL get_qs_kind(qs_kind_set(ikind), zeff=zeff, alpha_core_charge=alpha_core_charge)
386 ecore_self = ecore_self - real(natom,
dp)*zeff**2*sqrt(alpha_core_charge)
389 energy%core_self = ecore_self/sqrt(
twopi)
390 IF (
PRESENT(e_self_core))
THEN
391 e_self_core = energy%core_self
394 IF (
ASSOCIATED(atprop))
THEN
395 IF (atprop%energy)
THEN
397 CALL get_qs_env(qs_env=qs_env, particle_set=particle_set, &
398 local_particles=local_particles)
399 natom =
SIZE(particle_set)
402 DO ikind = 1,
SIZE(atomic_kind_set)
403 nparticle_local = local_particles%n_el(ikind)
404 CALL get_qs_kind(qs_kind_set(ikind), zeff=zeff, alpha_core_charge=alpha_core_charge)
405 es = zeff**2*sqrt(alpha_core_charge)/sqrt(
twopi)
406 DO iparticle_local = 1, nparticle_local
407 iatom = local_particles%list(ikind)%array(iparticle_local)
408 atprop%ateself(iatom) = atprop%ateself(iatom) - es
413 IF (
PRESENT(atecc))
THEN
415 CALL get_qs_env(qs_env=qs_env, particle_set=particle_set, &
416 local_particles=local_particles)
417 natom =
SIZE(particle_set)
418 DO ikind = 1,
SIZE(atomic_kind_set)
419 nparticle_local = local_particles%n_el(ikind)
420 CALL get_qs_kind(qs_kind_set(ikind), zeff=zeff, alpha_core_charge=alpha_core_charge)
421 es = zeff**2*sqrt(alpha_core_charge)/sqrt(
twopi)
422 DO iparticle_local = 1, nparticle_local
423 iatom = local_particles%list(ikind)%array(iparticle_local)
424 atecc(iatom) = atecc(iatom) - es
429 CALL timestop(handle)
444 REAL(kind=
dp),
INTENT(IN) :: alpha
445 REAL(kind=
dp),
DIMENSION(:) :: atecc
447 CHARACTER(len=*),
PARAMETER :: routinen =
'calculate_ecore_alpha'
449 INTEGER :: handle, iatom, ikind, jatom, jkind, &
451 INTEGER,
ALLOCATABLE,
DIMENSION(:) :: kind_of
452 REAL(kind=
dp) :: dab, eab, fab, rootaab, zab
453 REAL(kind=
dp),
ALLOCATABLE,
DIMENSION(:) :: zeff
454 REAL(kind=
dp),
DIMENSION(3) :: rab
458 TYPE(
qs_kind_type),
DIMENSION(:),
POINTER :: qs_kind_set
460 CALL timeset(routinen, handle)
464 atomic_kind_set=atomic_kind_set, &
465 qs_kind_set=qs_kind_set, &
466 particle_set=particle_set)
469 nkind =
SIZE(atomic_kind_set)
470 natom =
SIZE(particle_set)
471 ALLOCATE (zeff(nkind))
474 CALL get_qs_kind(qs_kind_set(ikind), zeff=zeff(ikind))
477 rootaab = sqrt(0.5_dp*alpha)
479 ikind = kind_of(iatom)
480 atecc(iatom) = atecc(iatom) - zeff(ikind)**2*sqrt(alpha/
twopi)
481 DO jatom = iatom + 1, natom
482 jkind = kind_of(jatom)
483 zab = zeff(ikind)*zeff(jkind)
485 rab = particle_set(iatom)%r - particle_set(jatom)%r
487 dab = sqrt(sum(rab(:)**2))
488 eab = zab*erfc(rootaab*dab)/dab
489 atecc(iatom) = atecc(iatom) + 0.5_dp*eab
490 atecc(jatom) = atecc(jatom) + 0.5_dp*eab
496 CALL timestop(handle)
Define the atomic kind types and their sub types.
subroutine, public get_atomic_kind_set(atomic_kind_set, atom_of_kind, kind_of, natom_of_kind, maxatom, natom, nshell, fist_potential_present, shell_present, shell_adiabatic, shell_check_distance, damping_present)
Get attributes of an atomic kind set.
subroutine, public get_atomic_kind(atomic_kind, fist_potential, element_symbol, name, mass, kind_number, natom, atom_list, rcov, rvdw, z, qeff, apol, cpol, mm_radius, shell, shell_active, damping)
Get attributes of an atomic kind.
Holds information on atomic properties.
subroutine, public atprop_array_init(atarray, natom)
...
Handles all functions related to the CELL.
subroutine, public dbcsr_dot(matrix_a, matrix_b, trace)
Computes the dot product of two matrices, also known as the trace of their matrix product.
stores a lists of integer that are local to a processor. The idea is that these integers represent ob...
Defines the basic variable types.
integer, parameter, public dp
Definition of mathematical constants and functions.
real(kind=dp), parameter, public oorootpi
real(kind=dp), parameter, public twopi
Interface to the message passing library MPI.
Define the data structure for the particle information.
Calculation of the energies concerning the core charge distribution.
subroutine, public calculate_ecore_overlap(qs_env, para_env, calculate_forces, molecular, e_overlap_core, atecc)
Calculate the overlap energy of the core charge distribution.
subroutine, public calculate_ecore_self(qs_env, e_self_core, atecc)
Calculate the self energy of the core charge distribution.
subroutine, public calculate_ecore_alpha(qs_env, alpha, atecc)
Calculate the overlap and self energy of the core charge distribution for a given alpha Use a minimum...
subroutine, public get_qs_env(qs_env, atomic_kind_set, qs_kind_set, cell, super_cell, cell_ref, use_ref_cell, kpoints, dft_control, mos, sab_orb, sab_all, qmmm, qmmm_periodic, sac_ae, sac_ppl, sac_lri, sap_ppnl, sab_vdw, sab_scp, sap_oce, sab_lrc, sab_se, sab_xtbe, sab_tbe, sab_core, sab_xb, sab_xtb_pp, sab_xtb_nonbond, sab_almo, sab_kp, sab_kp_nosym, particle_set, energy, force, matrix_h, matrix_h_im, matrix_ks, matrix_ks_im, matrix_vxc, run_rtp, rtp, matrix_h_kp, matrix_h_im_kp, matrix_ks_kp, matrix_ks_im_kp, matrix_vxc_kp, kinetic_kp, matrix_s_kp, matrix_w_kp, matrix_s_ri_aux_kp, matrix_s, matrix_s_ri_aux, matrix_w, matrix_p_mp2, matrix_p_mp2_admm, rho, rho_xc, pw_env, ewald_env, ewald_pw, active_space, mpools, input, para_env, blacs_env, scf_control, rel_control, kinetic, qs_charges, vppl, rho_core, rho_nlcc, rho_nlcc_g, ks_env, ks_qmmm_env, wf_history, scf_env, local_particles, local_molecules, distribution_2d, dbcsr_dist, molecule_kind_set, molecule_set, subsys, cp_subsys, oce, local_rho_set, rho_atom_set, task_list, task_list_soft, rho0_atom_set, rho0_mpole, rhoz_set, ecoul_1c, rho0_s_rs, rho0_s_gs, do_kpoints, has_unit_metric, requires_mo_derivs, mo_derivs, mo_loc_history, nkind, natom, nelectron_total, nelectron_spin, efield, neighbor_list_id, linres_control, xas_env, virial, cp_ddapc_env, cp_ddapc_ewald, outer_scf_history, outer_scf_ihistory, x_data, et_coupling, dftb_potential, results, se_taper, se_store_int_env, se_nddo_mpole, se_nonbond_env, admm_env, lri_env, lri_density, exstate_env, ec_env, harris_env, dispersion_env, gcp_env, vee, rho_external, external_vxc, mask, mp2_env, bs_env, kg_env, wanniercentres, atprop, ls_scf_env, do_transport, transport_env, v_hartree_rspace, s_mstruct_changed, rho_changed, potential_changed, forces_up_to_date, mscfg_env, almo_scf_env, gradient_history, variable_history, embed_pot, spin_embed_pot, polar_env, mos_last_converged, eeq, rhs)
Get the QUICKSTEP environment.
Define the quickstep kind type and their sub types.
subroutine, public get_qs_kind(qs_kind, basis_set, basis_type, ncgf, nsgf, all_potential, tnadd_potential, gth_potential, sgp_potential, upf_potential, se_parameter, dftb_parameter, xtb_parameter, dftb3_param, zatom, zeff, elec_conf, mao, lmax_dftb, alpha_core_charge, ccore_charge, core_charge, core_charge_radius, paw_proj_set, paw_atom, hard_radius, hard0_radius, max_rad_local, covalent_radius, vdw_radius, gpw_type_forced, harmonics, max_iso_not0, max_s_harm, grid_atom, ngrid_ang, ngrid_rad, lmax_rho0, dft_plus_u_atom, l_of_dft_plus_u, n_of_dft_plus_u, u_minus_j, u_of_dft_plus_u, j_of_dft_plus_u, alpha_of_dft_plus_u, beta_of_dft_plus_u, j0_of_dft_plus_u, occupation_of_dft_plus_u, dispersion, bs_occupation, magnetization, no_optimize, addel, laddel, naddel, orbitals, max_scf, eps_scf, smear, u_ramping, u_minus_j_target, eps_u_ramping, init_u_ramping_each_scf, reltmat, ghost, floating, name, element_symbol, pao_basis_size, pao_model_file, pao_potentials, pao_descriptors, nelec)
Get attributes of an atomic kind.
Define the neighbor list data types and the corresponding functionality.
subroutine, public neighbor_list_iterator_create(iterator_set, nl, search, nthread)
Neighbor list iterator functions.
subroutine, public neighbor_list_iterator_release(iterator_set)
...
integer function, public neighbor_list_iterate(iterator_set, mepos)
...
subroutine, public get_iterator_info(iterator_set, mepos, ikind, jkind, nkind, ilist, nlist, inode, nnode, iatom, jatom, r, cell)
...
pure subroutine, public virial_pair_force(pv_virial, f0, force, rab)
Computes the contribution to the stress tensor from two-body pair-wise forces.
Provides all information about an atomic kind.
type for the atomic properties
Type defining parameters related to the simulation cell.
structure to store local (to a processor) ordered lists of integers.
stores all the informations relevant to an mpi environment
Provides all information about a quickstep kind.