High-Temperature Superconductivity: Experiment and Theory

ISBN-13: 9783642784088 / Angielski / Miękka / 2011 / 230 str.

Nikolai M. Plakida; A. N. Ermilov

Opis

High-Temperature Superconductors provides an up-to-date and comprehensive review of the properties of these fascinating materials. Much has been learned about the behavior and mechanism of this novel type of superconductivity over the past five years, but many questions remain unanswered. This book gives an invaluable survey which will help students and researchers to consolidate their knowledge and build upon it. A large number of illustrations and tables give valuable information for specialists. A critical comparison of different theoretical models involving strong electron correlations, spin fluctuations, phonons and excitons provides a background for understanding modern trends in the theory of high-temperature superconductivity.

Spis treści

1. Introduction.- 1.1 The Discovery of High-Temperature Superconductivity.- 1.2 A New Class of Oxide Superconductors.- 1.3 General Properties of Oxide Superconductors.- 2. Crystal Structure.- 2.1 The Structure of Ba1-xKxBiO3.- 2.2 Lai1-xMxCuO4 Compounds.- 2.2.1 The Structure of La2-xMxCuO4-y.- 2.2.2 A Phenomenological Theory of Structural Phase Transitions in La2CuO4- Based Compounds.- 2.3 Nd2-xCexCuO4 Compounds.- 2.4 Y-Ba-Cu-O-Based Compounds.- 2.4.1 The Structure of YBa2Cu3O7-y.- 2.4.2 Modifications of the YBCO Structure.- 2.5 Bi-Ca-Sr-Cu-O and Tl-Ca-Ba-Cu-O Compounds.- 3. Antiferromagnetism in High-Temperature Superconductors.- 3.1 Antiferromagnetism in La2CuO4 Compounds.- 3.1.1 Magnetic Structure.- 3.1.2 A Phenomenological Theory of Magnetic Phase Transitions in La2CuO4.- 3.1.3 Spin Dynamics in La2?xMxCuO4.- 3.2 Antiferromagnetism in YBa2Cu3O6+x Compounds.- 3.2.1 The Magnetic Phase Diagram.- 3.2.2 Spin Dynamics in YBa2Cu3O6+x.- 3.2.3 Antiferromagnetism of Rare-Earth Ions in REBa2Cu3O6+x.- 3.3 Spin Dynamics Studied by the NMR Method.- 3.3.1 The Knight Shift.- 3.3.2 Spin-Lattice Relaxation.- 4. Thermodynamic Properties of High-Temperature Superconductors.- 4.1 The Anisotropic Ginsburg-Landau Model.- 4.2 Specific Heat.- 4.3 Magnetic Properties.- 5. Electronic Properties of High-Tc Superconductors.- 5.1 Crystal Chemistry of Oxide Superconductors.- 5.2 The Effect of Impurity Substitution.- 5.3 Theoretical Electronic Band-Structure Studies.- 5.3.1 Electronic Band-Structure Calculations.- 5.3.2 Effective Hamiltonians in Models of La2CuO4.- 5.4 Experimental Studies of the Electronic Structure.- 5.4.1 High-Energy Scale Spectroscopy.- 5.4.2 Studies of the Fermi Surface.- 5.4.3 Optical Electron Spectroscopy.- 5.5 Transport Properties.- 5.5.1 Resistivity.- 5.5.2 Hall Effect.- 5.5.3 Thermopower and Heat Conductivity.- 5.6 Superconducting Gap.- 5.6.1 Tunneling Experiments.- 5.6.2 Other Experiments.- 6. Lattice Dynamics and Electron-Phonon Interaction.- 6.1 Phonon Spectra — Neutron Scattering.- 6.2 Optical Investigations.- 6.3 Theoretical Models.- 7. Theoretical Models of High-Temperature Superconductivity.- 7.1 Quasi-Particles in Models with Strong Correlation.- 7.1.1 Model Hamiltonians.- 7.1.2 The One-Hole Quasi-Particle Spectrum.- 7.1.3 Spin Fluctuation Spectrum.- 7.2 Superconductivity in Systems with Strong Correlations.- 7.2.1 Unconventional Ground States.- 7.2.2 Superconductivity in the t-J Model.- 7.2.3 Superconductivity in the p-d Model.- 7.3 Antiferromagnetism and Superconductivity.- 7.4 Electron-Phonon Mechanism.- 7.4.1 Isotope Effect.- 7.4.2 Strong Electron-Phonon Coupling.- 7.4.3 Anharmonic Model of a Superconductor.- 7.4.4 Polarons and Bipolaron Superconductivity.- 7.4.5 Weak Coupling in the Quasi-Two-Dimensional Lattice.- 7.4.6 Spin-Fluctuation and Electron-Phonon Interactions.- 7.5 Exciton Models.- 7.5.1 Plasmon Model.- 7.5.2 Jahn-Teller Excitations and the d-d Model.- 7.5.3 Coulomb Interaction in the Multiband Models.- 8. Conclusion.- References.