Re: [QE-users] Phonon SCF does not converge with semicore pseudopotentials

2022-02-09 Thread Lorenzo Paulatto
Did you check the electronic bands structure? Is it actually an insulator, as you are treating it? hth Dr. Lorenzo Paulatto IdR @ IMPMC - CNRS UMR 7590 & Sorbonne Université phone: +33 (0)1 442 79822 / skype: paulatz http://www.impmc.upmc.fr/~paulatto/ (https://link.getmailspring.com/link/0161e1

Re: [QE-users] Phonon SCF does not converge with semicore pseudopotentials

2022-02-09 Thread Antonio Crepaldi
Dear Dr. Paulatto, Thank you for your reply. Yes, the material has around 1 eV bandgap highest occupied, lowest unoccupied level (ev): 2.31383.3309 AC -- Department of Physics "Aldo Moro" University of Bari Il giorno mer 9 feb 2022 alle ore 09:42 Lorenzo Paulatto < lorenzo.paula...@so

Re: [QE-users] Crystal structure changes while doing vc-relax calculation.

2022-02-09 Thread Vivek Christhunathan
Hi Michal, Thank you very much for your suggestion. *>crystal_sg and correct space gropu nuber (space_group)>Correct ibrav will be generated automatically , no need to eneter ...* The space group number of CaWO4 unit-cell (ICSD no: 18135) is 88 since it has I41/a space-group, but the Space gr

Re: [QE-users] Crystal structure changes while doing vc-relax calculation.

2022-02-09 Thread Husak Michal
If you use space group for QE setting, you can enter ONLY the symmetry independent atoms ... Othervise QE will generate the atoms based on symetry multiple times = overlap. If your supercell keep the original symetry it will work ... If your supercell does not have the original symmetry and it re