While the macroscopic phenomenon of superconductivity is well known and in practical use worldwide, the current theoretical paradigm for superconductivity suffers from a number of limitations. For example, there is no currently accepted theoretical explanation for the pattern of superconductor critical temperatures in the periodic table. Historical

Dougherty, Ralph; Kimel, J. Daniel

Introduction. Pattern of Elemental Superconductors in the Periodic Table. High-Temperature Superconductors, Tc > 77 K: Electron Spin in Superconductors. Heat Capacity and Magnetic Susceptibility in Superconductors. Quantum Foundations of Molecular Electricity and Magnetism. Metals and Insulators. Electron Transport in Metals. Magnetoresistance. Quantum Hall Effect. Type I Superconductivity. Type II Superconductivity. Conclusions.