Effective Model for LK-99: Potential Avenue for New Superconductivity Research

"In conclusion, based on the LDA band calculations, we have identified the low energy hole excitation and we propose an effective Hamiltonian where Cu and O occupies the A and B sites of a stack of buckled honeycomb lattices. The key parameters are the hopping integral and the energy D which separates the Cu and O onsite energies.The hopping energies and D are well balanced. We propose that this system should be treated as a charge transfer system [9] which may be close to the metal-insulator transition and has the potential of exhibiting novel physics and unconventional SC. However, the energy scale is small, considerably smaller than the energy scale in the cuprates and more comparable to the organics. Ordinarily one would not expect very high Tc with these parameters, but not much is known about system such as these with intermediate correlations and more work is surely needed. We plan to explore some versions of these models with numerical methods."

Point is: Even if this is not a SC, LK-99 claims may lead to new innovations anyway