" Calculations of L-edge spectra using state-interaction approach entails a two-step procedure. First, Q-Chem computes necessary CVS-EOM states and SOCs. In the second step, the spin-orbit perturbed spectrum is computed by a post-processing script. Scripts, detailed instructions, and examples can be found here ."
Where is that “here” pointing to? I recall somewhere the manual used to indeed provide detailed information on the new SOC module by Pavel Pokhilko and Evgeny Epifanovsky but I cant seem to find it anymore.
The reference should be to M. L. Vidal, Marta L. Vidal / l-edge · GitLab. That’s correct in our (developer) LaTeX manual so should be correct in PDF going forward, if you’re looking at HTML manual will you please give me a URL? It’s possible there was a LaTeX-to-HTML conversion error.
The CVS EOM-CC SOC paper is here that should be in the manual: https://pubs.acs.org/doi/abs/10.1021/acs.jpclett.0c02027
There we extended the state-interaction approach for L-edges along with other things, such as Dyson orbitals.
Yep I was aware of the paper. I was needing more specific details about how access the functionality in QChem and helpful scripts that were promised by the manual.
Q-Chem functionality and the way to get it is pretty much the same as without CVS. The state interaction can be crafted by hand by collecting all the printed matrix elements. But it is not very convenient when the number of interacting states is large, so Marta wrote that script.
Aha - that is exactly the section of the manual I remembered but couldn’t find. It didn’t show up in the first few entries when I look up SOC in the search bar and only now I see the small arrow at the bottom to look at more…
