I will show some new ideas that have appeared in the field of supercondictivity, since the things found in textbooks. In particular I will briefly discuss the following papers:
High-temperature superconductors: underlyingphysics and applications Annette Bussmann-Holder, Hugo Keller, Zeitschrift für Naturforschung B 75, 3 (2020) https://doi.org/10.1515/znb-2019-0103