Line data Source code
1 : !--------------------------------------------------------------------------------------------------!
2 : ! CP2K: A general program to perform molecular dynamics simulations !
3 : ! Copyright 2000-2024 CP2K developers group <https://cp2k.org> !
4 : ! !
5 : ! SPDX-License-Identifier: GPL-2.0-or-later !
6 : !--------------------------------------------------------------------------------------------------!
7 :
8 : ! **************************************************************************************************
9 : !> \brief Calculation of Coulomb contributions in xTB
10 : !> \author JGH
11 : ! **************************************************************************************************
12 : MODULE xtb_coulomb
13 : USE ai_contraction, ONLY: block_add,&
14 : contraction
15 : USE ai_overlap, ONLY: overlap_ab
16 : USE atomic_kind_types, ONLY: atomic_kind_type,&
17 : get_atomic_kind_set
18 : USE atprop_types, ONLY: atprop_array_init,&
19 : atprop_type
20 : USE basis_set_types, ONLY: gto_basis_set_p_type,&
21 : gto_basis_set_type
22 : USE cell_types, ONLY: cell_type,&
23 : get_cell,&
24 : pbc
25 : USE cp_control_types, ONLY: dft_control_type,&
26 : xtb_control_type
27 : USE cp_dbcsr_api, ONLY: dbcsr_add,&
28 : dbcsr_get_block_p,&
29 : dbcsr_iterator_blocks_left,&
30 : dbcsr_iterator_next_block,&
31 : dbcsr_iterator_start,&
32 : dbcsr_iterator_stop,&
33 : dbcsr_iterator_type,&
34 : dbcsr_p_type
35 : USE distribution_1d_types, ONLY: distribution_1d_type
36 : USE ewald_environment_types, ONLY: ewald_env_get,&
37 : ewald_environment_type
38 : USE ewald_methods_tb, ONLY: tb_ewald_overlap,&
39 : tb_spme_evaluate
40 : USE ewald_pw_types, ONLY: ewald_pw_type
41 : USE kinds, ONLY: dp
42 : USE kpoint_types, ONLY: get_kpoint_info,&
43 : kpoint_type
44 : USE mathconstants, ONLY: oorootpi,&
45 : pi
46 : USE message_passing, ONLY: mp_para_env_type
47 : USE orbital_pointers, ONLY: ncoset
48 : USE particle_types, ONLY: particle_type
49 : USE pw_poisson_types, ONLY: do_ewald_ewald,&
50 : do_ewald_none,&
51 : do_ewald_pme,&
52 : do_ewald_spme
53 : USE qmmm_tb_coulomb, ONLY: build_tb_coulomb_qmqm
54 : USE qs_dftb3_methods, ONLY: build_dftb3_diagonal
55 : USE qs_energy_types, ONLY: qs_energy_type
56 : USE qs_environment_types, ONLY: get_qs_env,&
57 : qs_environment_type
58 : USE qs_force_types, ONLY: qs_force_type
59 : USE qs_integral_utils, ONLY: basis_set_list_setup,&
60 : get_memory_usage
61 : USE qs_kind_types, ONLY: get_qs_kind,&
62 : qs_kind_type
63 : USE qs_neighbor_list_types, ONLY: get_iterator_info,&
64 : neighbor_list_iterate,&
65 : neighbor_list_iterator_create,&
66 : neighbor_list_iterator_p_type,&
67 : neighbor_list_iterator_release,&
68 : neighbor_list_set_p_type
69 : USE qs_rho_types, ONLY: qs_rho_get,&
70 : qs_rho_type
71 : USE sap_kind_types, ONLY: clist_type,&
72 : release_sap_int,&
73 : sap_int_type
74 : USE virial_methods, ONLY: virial_pair_force
75 : USE virial_types, ONLY: virial_type
76 : USE xtb_types, ONLY: get_xtb_atom_param,&
77 : xtb_atom_type
78 : #include "./base/base_uses.f90"
79 :
80 : IMPLICIT NONE
81 :
82 : PRIVATE
83 :
84 : CHARACTER(len=*), PARAMETER, PRIVATE :: moduleN = 'xtb_coulomb'
85 :
86 : PUBLIC :: build_xtb_coulomb, gamma_rab_sr, dgamma_rab_sr, xtb_dsint_list
87 :
88 : CONTAINS
89 :
90 : ! **************************************************************************************************
91 : !> \brief ...
92 : !> \param qs_env ...
93 : !> \param ks_matrix ...
94 : !> \param rho ...
95 : !> \param charges ...
96 : !> \param mcharge ...
97 : !> \param energy ...
98 : !> \param calculate_forces ...
99 : !> \param just_energy ...
100 : ! **************************************************************************************************
101 21172 : SUBROUTINE build_xtb_coulomb(qs_env, ks_matrix, rho, charges, mcharge, energy, &
102 : calculate_forces, just_energy)
103 :
104 : TYPE(qs_environment_type), POINTER :: qs_env
105 : TYPE(dbcsr_p_type), DIMENSION(:, :), POINTER :: ks_matrix
106 : TYPE(qs_rho_type), POINTER :: rho
107 : REAL(dp), DIMENSION(:, :), INTENT(in) :: charges
108 : REAL(dp), DIMENSION(:), INTENT(in) :: mcharge
109 : TYPE(qs_energy_type), POINTER :: energy
110 : LOGICAL, INTENT(in) :: calculate_forces, just_energy
111 :
112 : CHARACTER(len=*), PARAMETER :: routineN = 'build_xtb_coulomb'
113 :
114 : INTEGER :: atom_i, atom_j, blk, ewald_type, handle, i, ia, iac, iatom, ic, icol, ikind, img, &
115 : irow, is, j, jatom, jkind, la, lb, lmaxa, lmaxb, natom, natorb_a, natorb_b, ni, nimg, nj, &
116 : nkind, nmat, za, zb
117 21172 : INTEGER, ALLOCATABLE, DIMENSION(:) :: atom_of_kind, kind_of
118 : INTEGER, DIMENSION(25) :: laoa, laob
119 : INTEGER, DIMENSION(3) :: cellind, periodic
120 : INTEGER, DIMENSION(5) :: occ
121 21172 : INTEGER, DIMENSION(:, :, :), POINTER :: cell_to_index
122 : LOGICAL :: defined, do_ewald, do_gamma_stress, &
123 : found, use_virial
124 : REAL(KIND=dp) :: alpha, deth, dr, ecsr, etaa, etab, f1, &
125 : f2, fi, gmij, kg, rcut, rcuta, rcutb, &
126 : zeff
127 21172 : REAL(KIND=dp), ALLOCATABLE, DIMENSION(:) :: xgamma, zeffk
128 21172 : REAL(KIND=dp), ALLOCATABLE, DIMENSION(:, :) :: gammab, gcij, gmcharge
129 21172 : REAL(KIND=dp), ALLOCATABLE, DIMENSION(:, :, :) :: gchrg
130 : REAL(KIND=dp), DIMENSION(25) :: gcint
131 : REAL(KIND=dp), DIMENSION(3) :: fij, rij
132 : REAL(KIND=dp), DIMENSION(5) :: kappaa, kappab
133 21172 : REAL(KIND=dp), DIMENSION(:, :), POINTER :: dsblock, ksblock, pblock, sblock
134 21172 : REAL(KIND=dp), DIMENSION(:, :, :), POINTER :: dsint
135 21172 : TYPE(atomic_kind_type), DIMENSION(:), POINTER :: atomic_kind_set
136 : TYPE(atprop_type), POINTER :: atprop
137 : TYPE(cell_type), POINTER :: cell
138 : TYPE(dbcsr_iterator_type) :: iter
139 21172 : TYPE(dbcsr_p_type), DIMENSION(:, :), POINTER :: matrix_p, matrix_s
140 : TYPE(dft_control_type), POINTER :: dft_control
141 : TYPE(distribution_1d_type), POINTER :: local_particles
142 : TYPE(ewald_environment_type), POINTER :: ewald_env
143 : TYPE(ewald_pw_type), POINTER :: ewald_pw
144 : TYPE(kpoint_type), POINTER :: kpoints
145 : TYPE(mp_para_env_type), POINTER :: para_env
146 : TYPE(neighbor_list_iterator_p_type), &
147 21172 : DIMENSION(:), POINTER :: nl_iterator
148 : TYPE(neighbor_list_set_p_type), DIMENSION(:), &
149 21172 : POINTER :: n_list
150 21172 : TYPE(particle_type), DIMENSION(:), POINTER :: particle_set
151 21172 : TYPE(qs_force_type), DIMENSION(:), POINTER :: force
152 21172 : TYPE(qs_kind_type), DIMENSION(:), POINTER :: qs_kind_set
153 21172 : TYPE(sap_int_type), DIMENSION(:), POINTER :: sap_int
154 : TYPE(virial_type), POINTER :: virial
155 : TYPE(xtb_atom_type), POINTER :: xtb_atom_a, xtb_atom_b, xtb_kind
156 : TYPE(xtb_control_type), POINTER :: xtb_control
157 :
158 21172 : CALL timeset(routineN, handle)
159 :
160 21172 : NULLIFY (matrix_p, matrix_s, virial, atprop, dft_control)
161 :
162 : CALL get_qs_env(qs_env, &
163 : qs_kind_set=qs_kind_set, &
164 : particle_set=particle_set, &
165 : cell=cell, &
166 : virial=virial, &
167 : atprop=atprop, &
168 21172 : dft_control=dft_control)
169 :
170 21172 : xtb_control => dft_control%qs_control%xtb_control
171 :
172 21172 : use_virial = .FALSE.
173 21172 : IF (calculate_forces) THEN
174 788 : use_virial = virial%pv_availability .AND. (.NOT. virial%pv_numer)
175 : END IF
176 :
177 21172 : do_gamma_stress = .FALSE.
178 21172 : IF (.NOT. just_energy .AND. use_virial) THEN
179 48 : IF (dft_control%nimages == 1) do_gamma_stress = .TRUE.
180 : END IF
181 :
182 21172 : IF (atprop%energy) THEN
183 172 : CALL get_qs_env(qs_env=qs_env, particle_set=particle_set)
184 172 : natom = SIZE(particle_set)
185 172 : CALL atprop_array_init(atprop%atecoul, natom)
186 : END IF
187 :
188 21172 : IF (calculate_forces) THEN
189 : nmat = 4
190 : ELSE
191 20754 : nmat = 1
192 : END IF
193 :
194 21172 : CALL get_qs_env(qs_env, nkind=nkind, natom=natom)
195 84688 : ALLOCATE (gchrg(natom, 5, nmat))
196 1230478 : gchrg = 0._dp
197 84688 : ALLOCATE (gmcharge(natom, nmat))
198 258548 : gmcharge = 0._dp
199 :
200 : ! short range contribution (gamma)
201 : ! loop over all atom pairs (sab_xtbe)
202 21172 : kg = xtb_control%kg
203 21172 : NULLIFY (n_list)
204 21172 : CALL get_qs_env(qs_env=qs_env, sab_xtbe=n_list)
205 21172 : CALL neighbor_list_iterator_create(nl_iterator, n_list)
206 7408052 : DO WHILE (neighbor_list_iterate(nl_iterator) == 0)
207 : CALL get_iterator_info(nl_iterator, ikind=ikind, jkind=jkind, &
208 7386880 : iatom=iatom, jatom=jatom, r=rij, cell=cellind)
209 7386880 : CALL get_qs_kind(qs_kind_set(ikind), xtb_parameter=xtb_atom_a)
210 7386880 : CALL get_xtb_atom_param(xtb_atom_a, defined=defined, natorb=natorb_a)
211 7386880 : IF (.NOT. defined .OR. natorb_a < 1) CYCLE
212 7386873 : CALL get_qs_kind(qs_kind_set(jkind), xtb_parameter=xtb_atom_b)
213 7386873 : CALL get_xtb_atom_param(xtb_atom_b, defined=defined, natorb=natorb_b)
214 7386873 : IF (.NOT. defined .OR. natorb_b < 1) CYCLE
215 : ! atomic parameters
216 7386866 : CALL get_xtb_atom_param(xtb_atom_a, eta=etaa, lmax=lmaxa, kappa=kappaa, rcut=rcuta)
217 7386866 : CALL get_xtb_atom_param(xtb_atom_b, eta=etab, lmax=lmaxb, kappa=kappab, rcut=rcutb)
218 : ! gamma matrix
219 7386866 : ni = lmaxa + 1
220 7386866 : nj = lmaxb + 1
221 29547464 : ALLOCATE (gammab(ni, nj))
222 7386866 : rcut = rcuta + rcutb
223 29547464 : dr = SQRT(SUM(rij(:)**2))
224 7386866 : CALL gamma_rab_sr(gammab, dr, ni, kappaa, etaa, nj, kappab, etab, kg, rcut)
225 90141548 : gchrg(iatom, 1:ni, 1) = gchrg(iatom, 1:ni, 1) + MATMUL(gammab, charges(jatom, 1:nj))
226 7386866 : IF (iatom /= jatom) THEN
227 90316062 : gchrg(jatom, 1:nj, 1) = gchrg(jatom, 1:nj, 1) + MATMUL(charges(iatom, 1:ni), gammab)
228 : END IF
229 7386866 : IF (calculate_forces) THEN
230 280771 : IF (dr > 1.e-6_dp) THEN
231 278831 : CALL dgamma_rab_sr(gammab, dr, ni, kappaa, etaa, nj, kappab, etab, kg, rcut)
232 1115324 : DO i = 1, 3
233 : gchrg(iatom, 1:ni, i + 1) = gchrg(iatom, 1:ni, i + 1) &
234 10194414 : + MATMUL(gammab, charges(jatom, 1:nj))*rij(i)/dr
235 1115324 : IF (iatom /= jatom) THEN
236 : gchrg(jatom, 1:nj, i + 1) = gchrg(jatom, 1:nj, i + 1) &
237 10533915 : - MATMUL(charges(iatom, 1:ni), gammab)*rij(i)/dr
238 : END IF
239 : END DO
240 278831 : IF (use_virial) THEN
241 1161150 : gcint(1:ni) = MATMUL(gammab, charges(jatom, 1:nj))
242 516084 : DO i = 1, 3
243 1092960 : fij(i) = -SUM(charges(iatom, 1:ni)*gcint(1:ni))*rij(i)/dr
244 : END DO
245 129021 : fi = 1.0_dp
246 129021 : IF (iatom == jatom) fi = 0.5_dp
247 129021 : CALL virial_pair_force(virial%pv_virial, fi, fij, rij)
248 : END IF
249 : END IF
250 : END IF
251 29547485 : DEALLOCATE (gammab)
252 : END DO
253 21172 : CALL neighbor_list_iterator_release(nl_iterator)
254 :
255 : ! 1/R contribution
256 :
257 21172 : IF (xtb_control%coulomb_lr) THEN
258 21172 : do_ewald = xtb_control%do_ewald
259 21172 : IF (do_ewald) THEN
260 : ! Ewald sum
261 8606 : NULLIFY (ewald_env, ewald_pw)
262 : CALL get_qs_env(qs_env=qs_env, &
263 8606 : ewald_env=ewald_env, ewald_pw=ewald_pw)
264 8606 : CALL get_cell(cell=cell, periodic=periodic, deth=deth)
265 8606 : CALL ewald_env_get(ewald_env, alpha=alpha, ewald_type=ewald_type)
266 8606 : CALL get_qs_env(qs_env=qs_env, sab_tbe=n_list)
267 8606 : CALL tb_ewald_overlap(gmcharge, mcharge, alpha, n_list, virial, use_virial)
268 0 : SELECT CASE (ewald_type)
269 : CASE DEFAULT
270 0 : CPABORT("Invalid Ewald type")
271 : CASE (do_ewald_none)
272 0 : CPABORT("Not allowed with xTB/DFTB")
273 : CASE (do_ewald_ewald)
274 0 : CPABORT("Standard Ewald not implemented in xTB/DFTB")
275 : CASE (do_ewald_pme)
276 0 : CPABORT("PME not implemented in xTB/DFTB")
277 : CASE (do_ewald_spme)
278 : CALL tb_spme_evaluate(ewald_env, ewald_pw, particle_set, cell, &
279 8606 : gmcharge, mcharge, calculate_forces, virial, use_virial)
280 : END SELECT
281 : ELSE
282 : ! direct sum
283 : CALL get_qs_env(qs_env=qs_env, &
284 12566 : local_particles=local_particles)
285 48336 : DO ikind = 1, SIZE(local_particles%n_el)
286 115335 : DO ia = 1, local_particles%n_el(ikind)
287 66999 : iatom = local_particles%list(ikind)%array(ia)
288 832714 : DO jatom = 1, iatom - 1
289 2919780 : rij = particle_set(iatom)%r - particle_set(jatom)%r
290 2919780 : rij = pbc(rij, cell)
291 2919780 : dr = SQRT(SUM(rij(:)**2))
292 796944 : IF (dr > 1.e-6_dp) THEN
293 729945 : gmcharge(iatom, 1) = gmcharge(iatom, 1) + mcharge(jatom)/dr
294 729945 : gmcharge(jatom, 1) = gmcharge(jatom, 1) + mcharge(iatom)/dr
295 735105 : DO i = 2, nmat
296 5160 : gmcharge(iatom, i) = gmcharge(iatom, i) + rij(i - 1)*mcharge(jatom)/dr**3
297 735105 : gmcharge(jatom, i) = gmcharge(jatom, i) - rij(i - 1)*mcharge(iatom)/dr**3
298 : END DO
299 : END IF
300 : END DO
301 : END DO
302 : END DO
303 12566 : CPASSERT(.NOT. use_virial)
304 : END IF
305 : END IF
306 :
307 : ! global sum of gamma*p arrays
308 : CALL get_qs_env(qs_env=qs_env, &
309 : atomic_kind_set=atomic_kind_set, &
310 21172 : force=force, para_env=para_env)
311 21172 : CALL para_env%sum(gmcharge(:, 1))
312 21172 : CALL para_env%sum(gchrg(:, :, 1))
313 :
314 21172 : IF (xtb_control%coulomb_lr) THEN
315 21172 : IF (do_ewald) THEN
316 : ! add self charge interaction and background charge contribution
317 81794 : gmcharge(:, 1) = gmcharge(:, 1) - 2._dp*alpha*oorootpi*mcharge(:)
318 9542 : IF (ANY(periodic(:) == 1)) THEN
319 80234 : gmcharge(:, 1) = gmcharge(:, 1) - pi/alpha**2/deth
320 : END IF
321 : END IF
322 : END IF
323 :
324 : ! energy
325 : CALL get_atomic_kind_set(atomic_kind_set=atomic_kind_set, &
326 : kind_of=kind_of, &
327 21172 : atom_of_kind=atom_of_kind)
328 21172 : ecsr = 0.0_dp
329 225400 : DO iatom = 1, natom
330 204228 : ikind = kind_of(iatom)
331 204228 : CALL get_qs_kind(qs_kind_set(ikind), xtb_parameter=xtb_kind)
332 204228 : CALL get_xtb_atom_param(xtb_kind, lmax=ni)
333 204228 : ni = ni + 1
334 541576 : ecsr = ecsr + SUM(charges(iatom, 1:ni)*gchrg(iatom, 1:ni, 1))
335 : END DO
336 :
337 21172 : energy%hartree = energy%hartree + 0.5_dp*ecsr
338 225400 : energy%hartree = energy%hartree + 0.5_dp*SUM(mcharge(:)*gmcharge(:, 1))
339 :
340 21172 : IF (atprop%energy) THEN
341 172 : CALL get_qs_env(qs_env=qs_env, local_particles=local_particles)
342 748 : DO ikind = 1, SIZE(local_particles%n_el)
343 576 : CALL get_qs_kind(qs_kind_set(ikind), xtb_parameter=xtb_kind)
344 576 : CALL get_xtb_atom_param(xtb_kind, lmax=ni, occupation=occ)
345 576 : ni = ni + 1
346 3456 : zeff = SUM(REAL(occ, KIND=dp))
347 4360 : DO ia = 1, local_particles%n_el(ikind)
348 3036 : iatom = local_particles%list(ikind)%array(ia)
349 : atprop%atecoul(iatom) = atprop%atecoul(iatom) + &
350 7258 : 0.5_dp*SUM(REAL(occ(1:ni), KIND=dp)*gchrg(iatom, 1:ni, 1))
351 : atprop%atecoul(iatom) = atprop%atecoul(iatom) + &
352 3612 : 0.5_dp*zeff*gmcharge(iatom, 1)
353 : END DO
354 : END DO
355 : END IF
356 :
357 21172 : IF (calculate_forces) THEN
358 3992 : DO iatom = 1, natom
359 3574 : ikind = kind_of(iatom)
360 3574 : atom_i = atom_of_kind(iatom)
361 3574 : CALL get_qs_kind(qs_kind_set(ikind), xtb_parameter=xtb_kind)
362 3574 : CALL get_xtb_atom_param(xtb_kind, lmax=ni)
363 : ! short range
364 3574 : ni = ni + 1
365 14296 : DO i = 1, 3
366 29914 : fij(i) = SUM(charges(iatom, 1:ni)*gchrg(iatom, 1:ni, i + 1))
367 : END DO
368 3574 : force(ikind)%rho_elec(1, atom_i) = force(ikind)%rho_elec(1, atom_i) - fij(1)
369 3574 : force(ikind)%rho_elec(2, atom_i) = force(ikind)%rho_elec(2, atom_i) - fij(2)
370 3574 : force(ikind)%rho_elec(3, atom_i) = force(ikind)%rho_elec(3, atom_i) - fij(3)
371 : ! long range
372 14296 : DO i = 1, 3
373 14296 : fij(i) = gmcharge(iatom, i + 1)*mcharge(iatom)
374 : END DO
375 3574 : force(ikind)%rho_elec(1, atom_i) = force(ikind)%rho_elec(1, atom_i) - fij(1)
376 3574 : force(ikind)%rho_elec(2, atom_i) = force(ikind)%rho_elec(2, atom_i) - fij(2)
377 7566 : force(ikind)%rho_elec(3, atom_i) = force(ikind)%rho_elec(3, atom_i) - fij(3)
378 : END DO
379 : END IF
380 :
381 21172 : IF (.NOT. just_energy) THEN
382 21130 : CALL get_qs_env(qs_env=qs_env, matrix_s_kp=matrix_s)
383 21130 : CALL qs_rho_get(rho, rho_ao_kp=matrix_p)
384 :
385 21130 : nimg = dft_control%nimages
386 21130 : NULLIFY (cell_to_index)
387 21130 : IF (nimg > 1) THEN
388 2644 : NULLIFY (kpoints)
389 2644 : CALL get_qs_env(qs_env=qs_env, kpoints=kpoints)
390 2644 : CALL get_kpoint_info(kpoint=kpoints, cell_to_index=cell_to_index)
391 : END IF
392 :
393 21130 : IF (calculate_forces .AND. SIZE(matrix_p, 1) == 2) THEN
394 432 : DO img = 1, nimg
395 : CALL dbcsr_add(matrix_p(1, img)%matrix, matrix_p(2, img)%matrix, &
396 432 : alpha_scalar=1.0_dp, beta_scalar=1.0_dp)
397 : END DO
398 : END IF
399 :
400 21130 : NULLIFY (sap_int)
401 21130 : IF (do_gamma_stress) THEN
402 : ! derivative overlap integral (non collapsed)
403 34 : CALL xtb_dsint_list(qs_env, sap_int)
404 : END IF
405 :
406 21130 : IF (nimg == 1) THEN
407 : ! no k-points; all matrices have been transformed to periodic bsf
408 18486 : CALL dbcsr_iterator_start(iter, matrix_s(1, 1)%matrix)
409 1395757 : DO WHILE (dbcsr_iterator_blocks_left(iter))
410 1377271 : CALL dbcsr_iterator_next_block(iter, irow, icol, sblock, blk)
411 1377271 : ikind = kind_of(irow)
412 1377271 : jkind = kind_of(icol)
413 :
414 : ! atomic parameters
415 1377271 : CALL get_qs_kind(qs_kind_set(ikind), xtb_parameter=xtb_atom_a)
416 1377271 : CALL get_qs_kind(qs_kind_set(jkind), xtb_parameter=xtb_atom_b)
417 1377271 : CALL get_xtb_atom_param(xtb_atom_a, z=za, lao=laoa)
418 1377271 : CALL get_xtb_atom_param(xtb_atom_b, z=zb, lao=laob)
419 :
420 1377271 : ni = SIZE(sblock, 1)
421 1377271 : nj = SIZE(sblock, 2)
422 5509084 : ALLOCATE (gcij(ni, nj))
423 5578238 : DO i = 1, ni
424 18559392 : DO j = 1, nj
425 12981154 : la = laoa(i) + 1
426 12981154 : lb = laob(j) + 1
427 17182121 : gcij(i, j) = 0.5_dp*(gchrg(irow, la, 1) + gchrg(icol, lb, 1))
428 : END DO
429 : END DO
430 1377271 : gmij = 0.5_dp*(gmcharge(irow, 1) + gmcharge(icol, 1))
431 2762918 : DO is = 1, SIZE(ks_matrix, 1)
432 1385647 : NULLIFY (ksblock)
433 : CALL dbcsr_get_block_p(matrix=ks_matrix(is, 1)%matrix, &
434 1385647 : row=irow, col=icol, block=ksblock, found=found)
435 1385647 : CPASSERT(found)
436 35953631 : ksblock = ksblock - gcij*sblock
437 38716549 : ksblock = ksblock - gmij*sblock
438 : END DO
439 1377271 : IF (calculate_forces) THEN
440 45310 : atom_i = atom_of_kind(irow)
441 45310 : atom_j = atom_of_kind(icol)
442 45310 : NULLIFY (pblock)
443 : CALL dbcsr_get_block_p(matrix=matrix_p(1, 1)%matrix, &
444 45310 : row=irow, col=icol, block=pblock, found=found)
445 45310 : CPASSERT(found)
446 181240 : DO i = 1, 3
447 135930 : NULLIFY (dsblock)
448 : CALL dbcsr_get_block_p(matrix=matrix_s(1 + i, 1)%matrix, &
449 135930 : row=irow, col=icol, block=dsblock, found=found)
450 135930 : CPASSERT(found)
451 135930 : fij(i) = 0.0_dp
452 : ! short range
453 1537413 : fi = -2.0_dp*SUM(pblock*dsblock*gcij)
454 135930 : force(ikind)%rho_elec(i, atom_i) = force(ikind)%rho_elec(i, atom_i) + fi
455 135930 : force(jkind)%rho_elec(i, atom_j) = force(jkind)%rho_elec(i, atom_j) - fi
456 135930 : fij(i) = fij(i) + fi
457 : ! long range
458 1537413 : fi = -2.0_dp*gmij*SUM(pblock*dsblock)
459 135930 : force(ikind)%rho_elec(i, atom_i) = force(ikind)%rho_elec(i, atom_i) + fi
460 135930 : force(jkind)%rho_elec(i, atom_j) = force(jkind)%rho_elec(i, atom_j) - fi
461 317170 : fij(i) = fij(i) + fi
462 : END DO
463 : END IF
464 4150299 : DEALLOCATE (gcij)
465 : END DO
466 18486 : CALL dbcsr_iterator_stop(iter)
467 : ! stress tensor (needs recalculation of overlap integrals)
468 18486 : IF (do_gamma_stress) THEN
469 118 : DO ikind = 1, nkind
470 358 : DO jkind = 1, nkind
471 240 : iac = ikind + nkind*(jkind - 1)
472 240 : IF (.NOT. ASSOCIATED(sap_int(iac)%alist)) CYCLE
473 : ! atomic parameters
474 138 : CALL get_qs_kind(qs_kind_set(ikind), xtb_parameter=xtb_atom_a)
475 138 : CALL get_qs_kind(qs_kind_set(jkind), xtb_parameter=xtb_atom_b)
476 138 : CALL get_xtb_atom_param(xtb_atom_a, lao=laoa, natorb=ni)
477 138 : CALL get_xtb_atom_param(xtb_atom_b, lao=laob, natorb=nj)
478 1196 : DO ia = 1, sap_int(iac)%nalist
479 974 : IF (.NOT. ASSOCIATED(sap_int(iac)%alist(ia)%clist)) CYCLE
480 956 : iatom = sap_int(iac)%alist(ia)%aatom
481 70471 : DO ic = 1, sap_int(iac)%alist(ia)%nclist
482 69275 : jatom = sap_int(iac)%alist(ia)%clist(ic)%catom
483 277100 : rij = sap_int(iac)%alist(ia)%clist(ic)%rac
484 277100 : dr = SQRT(SUM(rij(:)**2))
485 70249 : IF (dr > 1.e-6_dp) THEN
486 68803 : dsint => sap_int(iac)%alist(ia)%clist(ic)%acint
487 275212 : ALLOCATE (gcij(ni, nj))
488 283604 : DO i = 1, ni
489 1177695 : DO j = 1, nj
490 894091 : la = laoa(i) + 1
491 894091 : lb = laob(j) + 1
492 1108892 : gcij(i, j) = 0.5_dp*(gchrg(iatom, la, 1) + gchrg(jatom, lb, 1))
493 : END DO
494 : END DO
495 68803 : gmij = 0.5_dp*(gmcharge(iatom, 1) + gmcharge(jatom, 1))
496 68803 : icol = MAX(iatom, jatom)
497 68803 : irow = MIN(iatom, jatom)
498 68803 : NULLIFY (pblock)
499 : CALL dbcsr_get_block_p(matrix=matrix_p(1, 1)%matrix, &
500 68803 : row=irow, col=icol, block=pblock, found=found)
501 68803 : CPASSERT(found)
502 68803 : fij = 0.0_dp
503 275212 : DO i = 1, 3
504 : ! short/long range
505 206409 : IF (irow == iatom) THEN
506 1956816 : f1 = -2.0_dp*SUM(pblock*dsint(:, :, i)*gcij)
507 1956816 : f2 = -2.0_dp*gmij*SUM(pblock*dsint(:, :, i))
508 : ELSE
509 1575975 : f1 = -2.0_dp*SUM(TRANSPOSE(pblock)*dsint(:, :, i)*gcij)
510 1575975 : f2 = -2.0_dp*gmij*SUM(TRANSPOSE(pblock)*dsint(:, :, i))
511 : END IF
512 275212 : fij(i) = f1 + f2
513 : END DO
514 68803 : DEALLOCATE (gcij)
515 68803 : fi = 1.0_dp
516 68803 : IF (iatom == jatom) fi = 0.5_dp
517 137606 : CALL virial_pair_force(virial%pv_virial, fi, fij, rij)
518 : END IF
519 : END DO
520 : END DO
521 : END DO
522 : END DO
523 : END IF
524 : ELSE
525 2644 : NULLIFY (n_list)
526 2644 : CALL get_qs_env(qs_env=qs_env, sab_orb=n_list)
527 2644 : CALL neighbor_list_iterator_create(nl_iterator, n_list)
528 1959732 : DO WHILE (neighbor_list_iterate(nl_iterator) == 0)
529 : CALL get_iterator_info(nl_iterator, ikind=ikind, jkind=jkind, &
530 1957088 : iatom=iatom, jatom=jatom, r=rij, cell=cellind)
531 :
532 1957088 : icol = MAX(iatom, jatom)
533 1957088 : irow = MIN(iatom, jatom)
534 :
535 1957088 : ic = cell_to_index(cellind(1), cellind(2), cellind(3))
536 1957088 : CPASSERT(ic > 0)
537 :
538 1957088 : NULLIFY (sblock)
539 : CALL dbcsr_get_block_p(matrix=matrix_s(1, ic)%matrix, &
540 1957088 : row=irow, col=icol, block=sblock, found=found)
541 1957088 : CPASSERT(found)
542 :
543 : ! atomic parameters
544 1957088 : CALL get_qs_kind(qs_kind_set(ikind), xtb_parameter=xtb_atom_a)
545 1957088 : CALL get_qs_kind(qs_kind_set(jkind), xtb_parameter=xtb_atom_b)
546 1957088 : CALL get_xtb_atom_param(xtb_atom_a, z=za, lao=laoa)
547 1957088 : CALL get_xtb_atom_param(xtb_atom_b, z=zb, lao=laob)
548 :
549 1957088 : ni = SIZE(sblock, 1)
550 1957088 : nj = SIZE(sblock, 2)
551 7828352 : ALLOCATE (gcij(ni, nj))
552 11425467 : DO i = 1, ni
553 72875334 : DO j = 1, nj
554 70918246 : IF (irow == iatom) THEN
555 34938761 : la = laoa(i) + 1
556 34938761 : lb = laob(j) + 1
557 34938761 : gcij(i, j) = 0.5_dp*(gchrg(iatom, la, 1) + gchrg(jatom, lb, 1))
558 : ELSE
559 26511106 : la = laoa(j) + 1
560 26511106 : lb = laob(i) + 1
561 26511106 : gcij(i, j) = 0.5_dp*(gchrg(iatom, la, 1) + gchrg(jatom, lb, 1))
562 : END IF
563 : END DO
564 : END DO
565 1957088 : gmij = 0.5_dp*(gmcharge(iatom, 1) + gmcharge(jatom, 1))
566 4098426 : DO is = 1, SIZE(ks_matrix, 1)
567 2141338 : NULLIFY (ksblock)
568 : CALL dbcsr_get_block_p(matrix=ks_matrix(is, ic)%matrix, &
569 2141338 : row=irow, col=icol, block=ksblock, found=found)
570 2141338 : CPASSERT(found)
571 146953790 : ksblock = ksblock - gcij*sblock
572 151052216 : ksblock = ksblock - gmij*sblock
573 : END DO
574 :
575 1957088 : IF (calculate_forces) THEN
576 29400 : atom_i = atom_of_kind(iatom)
577 29400 : atom_j = atom_of_kind(jatom)
578 29400 : IF (irow /= iatom) THEN
579 11957 : gmij = -gmij
580 759507 : gcij = -gcij
581 : END IF
582 29400 : NULLIFY (pblock)
583 : CALL dbcsr_get_block_p(matrix=matrix_p(1, ic)%matrix, &
584 29400 : row=irow, col=icol, block=pblock, found=found)
585 29400 : CPASSERT(found)
586 117600 : DO i = 1, 3
587 88200 : NULLIFY (dsblock)
588 : CALL dbcsr_get_block_p(matrix=matrix_s(1 + i, ic)%matrix, &
589 88200 : row=irow, col=icol, block=dsblock, found=found)
590 88200 : CPASSERT(found)
591 88200 : fij(i) = 0.0_dp
592 : ! short range
593 5846208 : fi = -2.0_dp*SUM(pblock*dsblock*gcij)
594 88200 : force(ikind)%rho_elec(i, atom_i) = force(ikind)%rho_elec(i, atom_i) + fi
595 88200 : force(jkind)%rho_elec(i, atom_j) = force(jkind)%rho_elec(i, atom_j) - fi
596 88200 : fij(i) = fij(i) + fi
597 : ! long range
598 5846208 : fi = -2.0_dp*gmij*SUM(pblock*dsblock)
599 88200 : force(ikind)%rho_elec(i, atom_i) = force(ikind)%rho_elec(i, atom_i) + fi
600 88200 : force(jkind)%rho_elec(i, atom_j) = force(jkind)%rho_elec(i, atom_j) - fi
601 205800 : fij(i) = fij(i) + fi
602 : END DO
603 29400 : IF (use_virial) THEN
604 73828 : dr = SQRT(SUM(rij(:)**2))
605 18457 : IF (dr > 1.e-6_dp) THEN
606 18393 : fi = 1.0_dp
607 18393 : IF (iatom == jatom) fi = 0.5_dp
608 18393 : CALL virial_pair_force(virial%pv_virial, fi, fij, rij)
609 : END IF
610 : END IF
611 : END IF
612 5873908 : DEALLOCATE (gcij)
613 :
614 : END DO
615 2644 : CALL neighbor_list_iterator_release(nl_iterator)
616 : END IF
617 :
618 21130 : IF (calculate_forces .AND. SIZE(matrix_p, 1) == 2) THEN
619 432 : DO img = 1, nimg
620 : CALL dbcsr_add(matrix_p(1, img)%matrix, matrix_p(2, img)%matrix, &
621 432 : alpha_scalar=1.0_dp, beta_scalar=-1.0_dp)
622 : END DO
623 : END IF
624 : END IF
625 :
626 21172 : IF (xtb_control%tb3_interaction) THEN
627 21172 : CALL get_qs_env(qs_env, nkind=nkind)
628 84688 : ALLOCATE (zeffk(nkind), xgamma(nkind))
629 77090 : DO ikind = 1, nkind
630 55918 : CALL get_qs_kind(qs_kind_set(ikind), xtb_parameter=xtb_kind)
631 77090 : CALL get_xtb_atom_param(xtb_kind, xgamma=xgamma(ikind), zeff=zeffk(ikind))
632 : END DO
633 : ! Diagonal 3rd order correction (DFTB3)
634 : CALL build_dftb3_diagonal(qs_env, ks_matrix, rho, mcharge, energy, xgamma, zeffk, &
635 21172 : sap_int, calculate_forces, just_energy)
636 21172 : DEALLOCATE (zeffk, xgamma)
637 : END IF
638 :
639 : ! QMMM
640 21172 : IF (qs_env%qmmm .AND. qs_env%qmmm_periodic) THEN
641 : CALL build_tb_coulomb_qmqm(qs_env, ks_matrix, rho, mcharge, energy, &
642 862 : calculate_forces, just_energy)
643 : END IF
644 :
645 21172 : IF (do_gamma_stress) THEN
646 34 : CALL release_sap_int(sap_int)
647 : END IF
648 :
649 21172 : CALL timestop(handle)
650 :
651 42344 : END SUBROUTINE build_xtb_coulomb
652 :
653 : ! **************************************************************************************************
654 : !> \brief Computes the short-range gamma parameter from
655 : !> Nataga-Mishimoto-Ohno-Klopman formula for xTB
656 : !> WARNING: The xTB function (gamma - 1/r) has still an l-dependent longrange (1/r^3)
657 : !> behaviour. We use a cutoff function to smoothly remove this part.
658 : !> However, this will change energies and effect final results.
659 : !>
660 : !> \param gmat ...
661 : !> \param rab ...
662 : !> \param nla ...
663 : !> \param kappaa ...
664 : !> \param etaa ...
665 : !> \param nlb ...
666 : !> \param kappab ...
667 : !> \param etab ...
668 : !> \param kg ...
669 : !> \param rcut ...
670 : !> \par History
671 : !> 10.2018 JGH
672 : !> \version 1.1
673 : ! **************************************************************************************************
674 7609393 : SUBROUTINE gamma_rab_sr(gmat, rab, nla, kappaa, etaa, nlb, kappab, etab, kg, rcut)
675 : REAL(dp), DIMENSION(:, :), INTENT(INOUT) :: gmat
676 : REAL(dp), INTENT(IN) :: rab
677 : INTEGER, INTENT(IN) :: nla
678 : REAL(dp), DIMENSION(:), INTENT(IN) :: kappaa
679 : REAL(dp), INTENT(IN) :: etaa
680 : INTEGER, INTENT(IN) :: nlb
681 : REAL(dp), DIMENSION(:), INTENT(IN) :: kappab
682 : REAL(dp), INTENT(IN) :: etab, kg, rcut
683 :
684 : REAL(KIND=dp), PARAMETER :: rsmooth = 1.0_dp
685 :
686 : INTEGER :: i, j
687 : REAL(KIND=dp) :: fcut, r, rk, x
688 7609393 : REAL(KIND=dp), ALLOCATABLE, DIMENSION(:, :) :: eta
689 :
690 30437572 : ALLOCATE (eta(nla, nlb))
691 36787843 : eta = 0.0_dp
692 :
693 18807301 : DO j = 1, nlb
694 36787843 : DO i = 1, nla
695 17980542 : eta(i, j) = 1._dp/(etaa*(1._dp + kappaa(i))) + 1._dp/(etab*(1._dp + kappab(j)))
696 29178450 : eta(i, j) = 2._dp/eta(i, j)
697 : END DO
698 : END DO
699 :
700 36787843 : gmat = 0.0_dp
701 7609393 : IF (rab < 1.e-6_dp) THEN
702 : ! on site terms
703 547702 : gmat(:, :) = eta(:, :)
704 7504713 : ELSEIF (rab > rcut) THEN
705 : ! do nothing
706 : ELSE
707 7504713 : rk = rab**kg
708 36240141 : eta = eta**(-kg)
709 7504713 : IF (rab < rcut - rsmooth) THEN
710 : fcut = 1.0_dp
711 : ELSE
712 832992 : r = rab - (rcut - rsmooth)
713 832992 : x = r/rsmooth
714 832992 : fcut = -6._dp*x**5 + 15._dp*x**4 - 10._dp*x**3 + 1._dp
715 : END IF
716 36240141 : gmat(:, :) = fcut*(1._dp/(rk + eta(:, :)))**(1._dp/kg) - fcut/rab
717 : END IF
718 :
719 7609393 : DEALLOCATE (eta)
720 :
721 7609393 : END SUBROUTINE gamma_rab_sr
722 :
723 : ! **************************************************************************************************
724 : !> \brief Computes the derivative of the short-range gamma parameter from
725 : !> Nataga-Mishimoto-Ohno-Klopman formula for xTB
726 : !> WARNING: The xTB function (gamma - 1/r) has still an l-dependent longrange (1/r^3)
727 : !> behaviour. We use a cutoff function to smoothly remove this part.
728 : !> However, this will change energies and effect final results.
729 : !>
730 : !> \param dgmat ...
731 : !> \param rab ...
732 : !> \param nla ...
733 : !> \param kappaa ...
734 : !> \param etaa ...
735 : !> \param nlb ...
736 : !> \param kappab ...
737 : !> \param etab ...
738 : !> \param kg ...
739 : !> \param rcut ...
740 : !> \par History
741 : !> 10.2018 JGH
742 : !> \version 1.1
743 : ! **************************************************************************************************
744 303408 : SUBROUTINE dgamma_rab_sr(dgmat, rab, nla, kappaa, etaa, nlb, kappab, etab, kg, rcut)
745 : REAL(dp), DIMENSION(:, :), INTENT(INOUT) :: dgmat
746 : REAL(dp), INTENT(IN) :: rab
747 : INTEGER, INTENT(IN) :: nla
748 : REAL(dp), DIMENSION(:), INTENT(IN) :: kappaa
749 : REAL(dp), INTENT(IN) :: etaa
750 : INTEGER, INTENT(IN) :: nlb
751 : REAL(dp), DIMENSION(:), INTENT(IN) :: kappab
752 : REAL(dp), INTENT(IN) :: etab, kg, rcut
753 :
754 : REAL(KIND=dp), PARAMETER :: rsmooth = 1.0_dp
755 :
756 : INTEGER :: i, j
757 : REAL(KIND=dp) :: dfcut, fcut, r, rk, x
758 303408 : REAL(KIND=dp), ALLOCATABLE, DIMENSION(:, :) :: eta
759 :
760 1213632 : ALLOCATE (eta(nla, nlb))
761 :
762 742804 : DO j = 1, nlb
763 1452211 : DO i = 1, nla
764 709407 : eta(i, j) = 1._dp/(etaa*(1._dp + kappaa(i))) + 1._dp/(etab*(1._dp + kappab(j)))
765 1148803 : eta(i, j) = 2._dp/eta(i, j)
766 : END DO
767 : END DO
768 :
769 303408 : IF (rab < 1.e-6) THEN
770 : ! on site terms
771 0 : dgmat(:, :) = 0.0_dp
772 303408 : ELSEIF (rab > rcut) THEN
773 0 : dgmat(:, :) = 0.0_dp
774 : ELSE
775 1452211 : eta = eta**(-kg)
776 303408 : rk = rab**kg
777 303408 : IF (rab < rcut - rsmooth) THEN
778 : fcut = 1.0_dp
779 : dfcut = 0.0_dp
780 : ELSE
781 40640 : r = rab - (rcut - rsmooth)
782 40640 : x = r/rsmooth
783 40640 : fcut = -6._dp*x**5 + 15._dp*x**4 - 10._dp*x**3 + 1._dp
784 40640 : dfcut = -30._dp*x**4 + 60._dp*x**3 - 30._dp*x**2
785 40640 : dfcut = dfcut/rsmooth
786 : END IF
787 1452211 : dgmat(:, :) = dfcut*(1._dp/(rk + eta(:, :)))**(1._dp/kg)
788 1452211 : dgmat(:, :) = dgmat(:, :) - dfcut/rab + fcut/rab**2
789 1452211 : dgmat(:, :) = dgmat(:, :) - fcut/(rk + eta(:, :))*(1._dp/(rk + eta(:, :)))**(1._dp/kg)*rk/rab
790 : END IF
791 :
792 303408 : DEALLOCATE (eta)
793 :
794 303408 : END SUBROUTINE dgamma_rab_sr
795 :
796 : ! **************************************************************************************************
797 : !> \brief ...
798 : !> \param qs_env ...
799 : !> \param sap_int ...
800 : ! **************************************************************************************************
801 38 : SUBROUTINE xtb_dsint_list(qs_env, sap_int)
802 :
803 : TYPE(qs_environment_type), POINTER :: qs_env
804 : TYPE(sap_int_type), DIMENSION(:), POINTER :: sap_int
805 :
806 : CHARACTER(LEN=*), PARAMETER :: routineN = 'xtb_dsint_list'
807 :
808 : INTEGER :: handle, i, iac, iatom, ikind, ilist, iset, jatom, jkind, jneighbor, jset, ldsab, &
809 : n1, n2, natorb_a, natorb_b, ncoa, ncob, nkind, nlist, nneighbor, nseta, nsetb, sgfa, sgfb
810 : INTEGER, DIMENSION(3) :: cell
811 38 : INTEGER, DIMENSION(:), POINTER :: la_max, la_min, lb_max, lb_min, npgfa, &
812 38 : npgfb, nsgfa, nsgfb
813 38 : INTEGER, DIMENSION(:, :), POINTER :: first_sgfa, first_sgfb
814 : LOGICAL :: defined
815 : REAL(KIND=dp) :: dr
816 38 : REAL(KIND=dp), ALLOCATABLE, DIMENSION(:, :) :: owork
817 38 : REAL(KIND=dp), ALLOCATABLE, DIMENSION(:, :, :) :: oint, sint
818 : REAL(KIND=dp), DIMENSION(3) :: rij
819 38 : REAL(KIND=dp), DIMENSION(:), POINTER :: set_radius_a, set_radius_b
820 38 : REAL(KIND=dp), DIMENSION(:, :), POINTER :: rpgfa, rpgfb, scon_a, scon_b, zeta, zetb
821 : TYPE(clist_type), POINTER :: clist
822 : TYPE(dft_control_type), POINTER :: dft_control
823 38 : TYPE(gto_basis_set_p_type), DIMENSION(:), POINTER :: basis_set_list
824 : TYPE(gto_basis_set_type), POINTER :: basis_set_a, basis_set_b
825 : TYPE(neighbor_list_iterator_p_type), &
826 38 : DIMENSION(:), POINTER :: nl_iterator
827 : TYPE(neighbor_list_set_p_type), DIMENSION(:), &
828 38 : POINTER :: sab_orb
829 38 : TYPE(qs_kind_type), DIMENSION(:), POINTER :: qs_kind_set
830 : TYPE(xtb_atom_type), POINTER :: xtb_atom_a, xtb_atom_b
831 :
832 38 : CALL timeset(routineN, handle)
833 :
834 38 : CALL get_qs_env(qs_env=qs_env, nkind=nkind)
835 38 : CPASSERT(.NOT. ASSOCIATED(sap_int))
836 390 : ALLOCATE (sap_int(nkind*nkind))
837 314 : DO i = 1, nkind*nkind
838 276 : NULLIFY (sap_int(i)%alist, sap_int(i)%asort, sap_int(i)%aindex)
839 314 : sap_int(i)%nalist = 0
840 : END DO
841 :
842 : CALL get_qs_env(qs_env=qs_env, &
843 : qs_kind_set=qs_kind_set, &
844 : dft_control=dft_control, &
845 38 : sab_orb=sab_orb)
846 :
847 : ! set up basis set lists
848 210 : ALLOCATE (basis_set_list(nkind))
849 38 : CALL basis_set_list_setup(basis_set_list, "ORB", qs_kind_set)
850 :
851 : ! loop over all atom pairs with a non-zero overlap (sab_orb)
852 38 : CALL neighbor_list_iterator_create(nl_iterator, sab_orb)
853 70653 : DO WHILE (neighbor_list_iterate(nl_iterator) == 0)
854 : CALL get_iterator_info(nl_iterator, ikind=ikind, jkind=jkind, iatom=iatom, &
855 : jatom=jatom, nlist=nlist, ilist=ilist, nnode=nneighbor, &
856 70615 : inode=jneighbor, cell=cell, r=rij)
857 70615 : iac = ikind + nkind*(jkind - 1)
858 : !
859 70615 : CALL get_qs_kind(qs_kind_set(ikind), xtb_parameter=xtb_atom_a)
860 70615 : CALL get_xtb_atom_param(xtb_atom_a, defined=defined, natorb=natorb_a)
861 70615 : IF (.NOT. defined .OR. natorb_a < 1) CYCLE
862 70615 : CALL get_qs_kind(qs_kind_set(jkind), xtb_parameter=xtb_atom_b)
863 70615 : CALL get_xtb_atom_param(xtb_atom_b, defined=defined, natorb=natorb_b)
864 70615 : IF (.NOT. defined .OR. natorb_b < 1) CYCLE
865 :
866 282460 : dr = SQRT(SUM(rij(:)**2))
867 :
868 : ! integral list
869 70615 : IF (.NOT. ASSOCIATED(sap_int(iac)%alist)) THEN
870 156 : sap_int(iac)%a_kind = ikind
871 156 : sap_int(iac)%p_kind = jkind
872 156 : sap_int(iac)%nalist = nlist
873 1460 : ALLOCATE (sap_int(iac)%alist(nlist))
874 1148 : DO i = 1, nlist
875 992 : NULLIFY (sap_int(iac)%alist(i)%clist)
876 992 : sap_int(iac)%alist(i)%aatom = 0
877 1148 : sap_int(iac)%alist(i)%nclist = 0
878 : END DO
879 : END IF
880 70615 : IF (.NOT. ASSOCIATED(sap_int(iac)%alist(ilist)%clist)) THEN
881 974 : sap_int(iac)%alist(ilist)%aatom = iatom
882 974 : sap_int(iac)%alist(ilist)%nclist = nneighbor
883 79381 : ALLOCATE (sap_int(iac)%alist(ilist)%clist(nneighbor))
884 71589 : DO i = 1, nneighbor
885 71589 : sap_int(iac)%alist(ilist)%clist(i)%catom = 0
886 : END DO
887 : END IF
888 70615 : clist => sap_int(iac)%alist(ilist)%clist(jneighbor)
889 70615 : clist%catom = jatom
890 282460 : clist%cell = cell
891 282460 : clist%rac = rij
892 353075 : ALLOCATE (clist%acint(natorb_a, natorb_b, 3))
893 70615 : NULLIFY (clist%achint)
894 3673726 : clist%acint = 0._dp
895 70615 : clist%nsgf_cnt = 0
896 70615 : NULLIFY (clist%sgf_list)
897 :
898 : ! overlap
899 70615 : basis_set_a => basis_set_list(ikind)%gto_basis_set
900 70615 : IF (.NOT. ASSOCIATED(basis_set_a)) CYCLE
901 70615 : basis_set_b => basis_set_list(jkind)%gto_basis_set
902 70615 : IF (.NOT. ASSOCIATED(basis_set_b)) CYCLE
903 : ! basis ikind
904 70615 : first_sgfa => basis_set_a%first_sgf
905 70615 : la_max => basis_set_a%lmax
906 70615 : la_min => basis_set_a%lmin
907 70615 : npgfa => basis_set_a%npgf
908 70615 : nseta = basis_set_a%nset
909 70615 : nsgfa => basis_set_a%nsgf_set
910 70615 : rpgfa => basis_set_a%pgf_radius
911 70615 : set_radius_a => basis_set_a%set_radius
912 70615 : scon_a => basis_set_a%scon
913 70615 : zeta => basis_set_a%zet
914 : ! basis jkind
915 70615 : first_sgfb => basis_set_b%first_sgf
916 70615 : lb_max => basis_set_b%lmax
917 70615 : lb_min => basis_set_b%lmin
918 70615 : npgfb => basis_set_b%npgf
919 70615 : nsetb = basis_set_b%nset
920 70615 : nsgfb => basis_set_b%nsgf_set
921 70615 : rpgfb => basis_set_b%pgf_radius
922 70615 : set_radius_b => basis_set_b%set_radius
923 70615 : scon_b => basis_set_b%scon
924 70615 : zetb => basis_set_b%zet
925 :
926 70615 : ldsab = get_memory_usage(qs_kind_set, "ORB", "ORB")
927 564920 : ALLOCATE (oint(ldsab, ldsab, 4), owork(ldsab, ldsab))
928 353075 : ALLOCATE (sint(natorb_a, natorb_b, 4))
929 4874763 : sint = 0.0_dp
930 :
931 218232 : DO iset = 1, nseta
932 147617 : ncoa = npgfa(iset)*ncoset(la_max(iset))
933 147617 : n1 = npgfa(iset)*(ncoset(la_max(iset)) - ncoset(la_min(iset) - 1))
934 147617 : sgfa = first_sgfa(1, iset)
935 531797 : DO jset = 1, nsetb
936 313565 : IF (set_radius_a(iset) + set_radius_b(jset) < dr) CYCLE
937 257686 : ncob = npgfb(jset)*ncoset(lb_max(jset))
938 257686 : n2 = npgfb(jset)*(ncoset(lb_max(jset)) - ncoset(lb_min(jset) - 1))
939 257686 : sgfb = first_sgfb(1, jset)
940 : CALL overlap_ab(la_max(iset), la_min(iset), npgfa(iset), rpgfa(:, iset), zeta(:, iset), &
941 : lb_max(jset), lb_min(jset), npgfb(jset), rpgfb(:, jset), zetb(:, jset), &
942 257686 : rij, sab=oint(:, :, 1), dab=oint(:, :, 2:4))
943 : ! Contraction
944 1436047 : DO i = 1, 4
945 : CALL contraction(oint(:, :, i), owork, ca=scon_a(:, sgfa:), na=n1, ma=nsgfa(iset), &
946 1030744 : cb=scon_b(:, sgfb:), nb=n2, mb=nsgfb(jset), fscale=1.0_dp, trans=.FALSE.)
947 : CALL block_add("IN", owork, nsgfa(iset), nsgfb(jset), sint(:, :, i), &
948 1344309 : sgfa, sgfb, trans=.FALSE.)
949 : END DO
950 : END DO
951 : END DO
952 : ! update dS/dR matrix
953 3673726 : clist%acint(1:natorb_a, 1:natorb_b, 1:3) = sint(1:natorb_a, 1:natorb_b, 2:4)
954 :
955 211883 : DEALLOCATE (oint, owork, sint)
956 :
957 : END DO
958 38 : CALL neighbor_list_iterator_release(nl_iterator)
959 :
960 38 : DEALLOCATE (basis_set_list)
961 :
962 38 : CALL timestop(handle)
963 :
964 76 : END SUBROUTINE xtb_dsint_list
965 :
966 15354440 : END MODULE xtb_coulomb
967 :
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