Phase Separation in Cuprate Superconductors

Written by leading experts including Nobel prize winner K.A. Müller the articles in this book review recent advances in our understanding of the nature of high-Tc cuprate superconductors, covering both material properties and the mechanism of superconductivity.

Inhalt
I General Properties.- Recipe for High-Tc Transition-Metal Chalcogenide Superconductors.- Phase Separation as a Possible Scenario for High Tc Superconductors: A Particular Overview.- Point Contact Spectroscopy in the High Tc Oxides.- Cuprate Superconductors: Universal Properties and Trends; Evidence for Bose-Einstein Condensation.- II Electronic Results I.- Polar on Formation and Percolative Phase Separation in HTSC.- On the Role of Electronic and Chemical Phase Separation: Susceptibility and Conductivity Experiments on La2?xCuO4+?.- The Phase Diagrams and Doped-Hole Segregation in La2CuO4+? and La2?xSrxCuO4+? (x ? 0.15, ? ? 0.12).- Neutron Spectroscopy in RBa2Cu3Ox (R=Rare Barth, 6?x?7) Compounds: Charge Transfer, Phase Separation, Spin Fluctuations.- III Electronic Results II.- Phase Separation in Cuprate Superconductors: Magnetic Resonance Studies.- Paramagnetic Resonance Studies of Phase Separation in Cuprate Superconductors.- Fermi Glass State in Partially Doped Insulating Cuprates.- Two-Magnon Raman Scattering in Doped YBa2Cu3Ox with Respect to Confined Hole Clusters.- IV NMR and Mössbauer Studies.- Electron Hole Ordering in La2CuO4+?.- Microscopic Study of Local Structure and Charge Distribution in Metallic La2CuO4+?.- Mössbauer Probe Measurements in La2?xSrxCuO4 and YBa2Cu3Ox.- V Structural Phase Separation.- Indications for a Phase Separation in YBa2Cu3O7?x.- Superconductivity Versus Oxygen Concentration in 123 Compounds: Influence of RE Ionic Radii Studied by Cu NQR.- The Role of the Additional Oxygen Atoms on the Superconducting Properties of La2CuO4-Related Compounds.- Structural Disorder and Phase Separation in TmBaCuO as Seen from Tm NMR.- VI Electron-Phonon Interaction I.- The Coupling of a Wigner Polaronic Charge Density Wave witha Fermi Liquid Arising from the Instability of a Wigner Polaron Crystal: A Possible Pairing Mechanism in High Tc Superconductors.- Pairing Interaction and Phonon Renormalization Favored by Phase Separation.- Electronic Excitations in Undoped and Lightly Oxygen Doped La2CuO4+y.- VII Electron-Phonon Interaction II.- Electronic Structure and High Tc Superconductivity in the Cuprates.- Apex Oxygen Anharmonicity and Low Energy Electronic Transitions Observed in 1-2-3 by IR-Excited Raman Spectroscopy.- Photoexcited Electons and Holes in YBa2Cu3O7??: A Study by Picosecond Raman Scattering.- Anharmonic Effects Related to the Apical Oxygen Vibration in YBa2Cu3O7 by LAPW Calculations.- VIII Further Theoretical Concepts.- Thermodynamics of the Emery Model.- The Effect of Coulomb Interactions on Phase Separation.- Options for the Effective Electron-Electron-Interaction from Unitary Transformations.