Superconductivity Revisited - Ralph Dougherty

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Résumé :
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 developments in condensed matter were strongly focused on the similarities of all metals and the electron gas model, with little attention paid to their real differences. Accessible by a wide audience, Superconductivity Revisited explores the work of those who investigated the differences, and laid the foundation for all current and future work. Topics Include * Pattern of Elemental Superconductors in the Periodic Table * High-Temperature Superconductors * 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 and Type II Superconductivity Superconductivity Revisited starts from the foundations and shows that the current theory of the subject cannot explain the pattern of superconductors in the periodic table, as the theory depends on a theory of resistivity not congruent with the Sommerfeld equation. Partial wave scattering is introduced as a route to deal with these issues. The book develops a theory of superconductivity that includes the periodic table. The new, coherent, understandable theory of superconductivity is directly based on thermodynamics, scattering theory, and molecular quantum mechanics.

Sommaire:
Introduction Five Unresolved Problems in Superconductivity Pattern of Elemental Superconductors in the Periodic Table Chemical Introductory Quantum Mechanics Periodic Table Quantum Structure Metals and Insulators Introduction to Bonding in Metals and Nonmetals Pressure Effects on Superconductivity High-Temperature Superconductors, Tc > 77 K d-Wave Symmetry for HTc Superconductors Electron Spin in Superconductors Unpaired Electron Spin and Superconductors Low-Temperature Limit of Knight Shift Experimentally Verified Electron Spin in a Superconductor Heat Capacity and Magnetic Susceptibility in Superconductors Heat Capacity Magnetic Susceptibility of Superconductors Quantum Foundations of Molecular Electricity and Magnetism The Sommerfeld Relationship Wiedemann-Franz Law Origins of Resistivity in Metals Quantum Mechanics and Thermal Conductance Metals and Insulators Factors in Forming Metals or Insulators Bonding in Small Clusters of Alkali Metals Bonding Models for Insulators Toward a Qualitative Model for Bonding in Metals Mott Transitions in Metallic Systems Electron Transport in Metals Band Theory in Normal Coordinates Resistivity/Conductance Electron Phonon Scattering Electron Cyclotron Resonance in Metals Magnetoresistance Hall Effect Hall Coefficient Angular Anisotropy of Magnetoresistance Conduction Band Shifts with External Magnetic Fields Meissner-Ochsenfeld Effect Heat Capacity at Tc de Haas van Alphen Effect Quantum Hall Effect Landau Levels Low and Zero Electron Scattering in the Quantum Hall Regime Quantum Hall Observation Phase Transition Quanta in the Quantum Hall Regime Type I Superconductivity Experimental Type I Superconductivity The Mott Transition, Electron Pair Bonds, and Superconductivity Experimental Approaches to Spin Pairing and Superconductivity Thermodynamic/Electronic Contributions to the Superconductor Energy Gap Empirical/Theoretical Requirements for Superconductivity Periodic Table of One-Bar Superconductors: Does It Fit These Requirements for Superconductivity? Estimating the Order of Tc for Elemental Superconductors Type II Superconductivity Isotope Effects in Superconductors Vortex Lattices Conclusions What About the Five Unresolved Problems in Superconductivity?