<div>Dear Cp2k Forum,</div><div>For a while now, I have been trying to calculate XAS Spectra of transition metal oxides using the LR-TDDFT method. Unfortunately, I wasn`t able to make the preceeding Hybrid-DFT SCF calculation converge for open-shell systems (CuO, CoO, NiO), while other closed shell systems (MgO, ZnO) show rapid convergence quite easily. So far, I've tried using the OT methods, which do seem to converge until reaching a sort of plateau, where the energy starts increasing in miniscule amounts. Further, Iǜe been trying to use diaganolization, however these calculations seem to oscillate even when including very little amounts (1e-2) of the new density.</div><div>Concerning the OT methods, I ve tried both DIIS and CG (with 2pnt and 3pnt linesearch), however, all calculations show the same behaviour.</div><div>Could anyone please help me with these calculations?</div><div><br></div><div>Best regards,</div><div><br></div><div>Börries</div><div><br></div><div>PS: Please find an example input, output and structure files attached, I am using cp2k - 8.2. As even this calculation using the CG optimizer with linesearch 3pnt reached the plateau and was very expensive, I unfortunately cancelled the calculation. (But could restart it if necessary) <br></div>
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