Seems like it may depend on getting specific binding sites. > Finally, the calculations presented here suggest that Cu substitution on the appropriate (Pb(1))

Seems like it may depend on getting specific binding sites. > Finally, the calculations presented here suggest that Cu substitution on the appropriate (Pb(1)) site displays many key characteristics for high-TC superconductivity, namely a particularly flat isolated d-manifold, and the potential presence of fluctuating magnetism, charge and phonons. However, substitution on the other Pb(2) does not appear to have such sought-after properties, despite being the lower-energy substitution site. This result hints to the synthesis challenge in obtaining Cu substituted on the appropriate site for obtaining a bulk superconducting sample. [1] 1. https://arxiv.org/abs/2307.16892 https://arxiv.org/abs/2307.16892