Atomic orbitals trapping electrons in place is a new source of frustration (instability) that can be used to create quantum behaviors

https://phys.org/news/2025-08-chemistry-geometry-triggers-unusual-electron.html

"2D metallic, air-stable, Pd5AlI2 capable of quantum behaviors due to inability of electrons to find place to settle with respect to each other's energies... Lieb lattices of squares, exhibit electronic flat band signal, forcing instability in that electrons share same energy, causing quantum behaviors... control by pulling on samples to introduce strain... future: use AI to identify similar but cheaper crystals that also might have orbital frustration... superconductors, rare-earth-free room-temperature magnets, quantum sensors"