Hello I am trying to set up a fairly simple test run for
ROKS. The simplest test I could think of for what I want to try to do is to set up 2 jobs, both will have a Na and Cl atom placed 1nm apart and with periodic boundary conditions turned off (and 1nm from nearest box wall). The 2 jobs differ in that I want the first to converge to neutral atoms, and the second to converge to ions. My understanding with ROKS is that this should be doable and fairly easy.<div><br /></div><div>My jobs are running into an error. CPASSERT failed qs_ks_utils.F:263, so there is something wrong with my setup. The CPASSERT in question is:</div><div> CPASSERT(Nelectron == k_alpha - k_beta)<br /></div><div>The CP2K code block I am using is:</div><div><br /></div><div> &DFT<br /> CHARGE 0<br /> MULTIPLICITY 1<br /> UKS<br /> ROKS<br /> &LOW_SPIN_ROKS<br /> ENERGY_SCALING 1 -1 1 -1<br /> SPIN_CONFIGURATION 1 1<br /> SPIN_CONFIGURATION 1 2<br /> SPIN_CONFIGURATION 2 2<br /> SPIN_CONFIGURATION 2 1<br /> &END LOW_SPIN_ROKS<br /></div><div>...</div><div> &END DFT</div><div><br /></div><div>My interpretation of how this would work is that it would find 2 unpaired electron levels: an 's' for Na and a 'p' for Cl. This would then bias the two orbitals to a certain spin. I don't think I am understanding the syntax of these commands properly and would like some guidance on how to properly cover the 2 scenarios I mentioned (neutral Na/Cl and ionic Na/Cl in a non-periodic box).</div><div><br /></div><div>Thanks</div><div>Michael</div>
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