Dear CP2K experts, <div><br></div><div>I would like to cell optimize glycine polymorphs at the B3LYP level.</div><div>The lattice parameters are about ABC 5 12 5 and the symmetry group is Monoclinic. </div><div>I have noticed that PBE found the space group of the polymorph correctly. However, for the B3LYP method to work, I need to multiply the unit cell (3*3*3 because of the CUTOFF_RADIUS 6.0). But using " multiple_unit_cell 3 3 3 " results in not recognizing the symmetry group by CP2K. I also use the KEEP_SYMMETRY, and KEEP_SPACE_GROUP as well. </div><div>Instead, I avoid using the "multiple_unit_cells" command by making a supercell using VESTA and skipping the point command for such a big supercell. Does it make any sense?</div><div>Any other suggestions to keep the symmetry with hybrid functionals? </div><div><br></div><div>Kindest regards,</div><div>Mozhdeh</div>
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