All of these substances are Type-II Superconductors, meaning that they allow magnetic fields to penetrate their interiors in units of flux quanta.
All of these substances are Type-II Superconductors, meaning that they allow magnetic fields to penetrate their interiors in units of flux quanta.* They were discovered in 1986 by K. A. Müller and J. G. Bednorz and the most prominent substances in this group are cuprates, such as YBCOs and BSCCOs, and perskovites. FTP, what are these compounds which have no electrical resistance at temperatures near the boiling point of nitrogen, rather than just slightly above absolute zero?
All of these substances are Type-II Superconductors, meaning that they allow magnetic fields to penetrate their interiors in units of flux quanta.
High-Temperature Superconductors