TitleTheory of High Temperature Superconductivity
Author(s)Fujita, S;Godoy, S
PublicationDordrecht, Springer Netherlands, 2001.
DescriptionXIX, 374 p : online resource
Abstract NoteFlux quantization experiments indicate that the carriers, Cooper pairs (pairons), in the supercurrent have charge magnitude 2e, and that they move independently. Josephson interference in a Superconducting Quantum Int- ference Device (SQUID) shows that the centers of masses (CM) of pairons move as bosons with a linear dispersion relation. Based on this evidence we develop a theory of superconductivity in conventional and mate- als from a unified point of view. Following Bardeen, Cooper and Schrieffer (BCS) we regard the phonon exchange attraction as the cause of superc- ductivity. For cuprate superconductors, however, we take account of both optical- and acoustic-phonon exchange. BCS started with a Hamiltonian containing ???electron??? and ???hole??? kinetic energies and a pairing interaction with the phonon variables eliminated. These ???electrons??? and ???holes??? were introduced formally in terms of a free-electron model, which we consider unsatisfactory. We define ???electrons??? and ???holes??? in terms of the cur- tures of the Fermi surface. ???Electrons??? (1) and ???holes??? (2) are different and so they are assigned with different effective masses: Blatt, Schafroth and Butler proposed to explain superconductivity in terms of a Bose-Einstein Condensation (BEC) of electron pairs, each having mass M and a size. The system of free massive bosons, having a quadratic dispersion relation: and moving in three dimensions (3D) undergoes a BEC transition at where is the pair density
ISBN,Price9780306482168
Keyword(s)1. COMPLEX SYSTEMS 2. CONDENSED MATTER 3. CONDENSED MATTER PHYSICS 4. DYNAMICAL SYSTEMS 5. EBOOK 6. EBOOK - SPRINGER 7. PHYSICAL CHEMISTRY 8. STATISTICAL PHYSICS 9. Statistical Physics and Dynamical Systems
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