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| Preface | |
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| Introduction | |
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| Superconductivity: a brief sketch | |
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| High-T[subscript c] superconductivity: a brief historical introduction | |
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| Superconducting materials | |
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| The BCS Model of Superconductivity in Metals | |
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| The BCS mechanism | |
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| Electron-electron attraction | |
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| Critical temperature | |
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| Strength of the electron-phonon interaction | |
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| The isotope effect | |
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| Energy gap | |
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| Coherence length | |
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| Penetration depth | |
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| Symmetry of the order parameter | |
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| Characteristics of the superconducting state | |
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| Type-I and type-II superconductors | |
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| Critical current | |
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| Phase stiffness | |
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| Josephson effects | |
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| Effect of impurities | |
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| High-frequency residual losses | |
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| Acoustic properties | |
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| Thermal properties | |
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| Tunneling | |
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| SIN tunneling | |
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| Density of states | |
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| SIS tunneling | |
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| The Josephson I[subscript c]R[subscript n] product | |
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| Andreev reflections | |
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| Tunneling techniques | |
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| Cuprates and Their Basic Properties | |
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| Structure | |
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| LSCO | |
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| YBCO | |
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| Bi2212 | |
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| NCCO | |
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| Structural phase transitions | |
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| Crystal structure and T[subscript c] | |
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| Structural defects | |
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| Doping and charge distribution | |
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| Charge doping and T[subscript c] | |
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| Charge inhomogeneities | |
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| Superconducting properties | |
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| The isotope effect | |
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| Absence of the correlation between [Delta](0) and T[subscript c] | |
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| Effective mass anisotropy | |
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| Resistivity and the effect of magnetic field | |
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| Coherence length | |
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| Penetration depth and superfluid density | |
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| Electronic specific heat and the condensation energy | |
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| Effect of impurities | |
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| Critical magnetic fields and critical current J[subscript c] | |
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| Phase stiffness | |
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| Phase coherence along the c axis | |
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| Two energy scales: pairing and phase-coherence | |
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| Cooper pairs above T[subscript c] | |
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| Symmetry of the order parameter: s-wave vs d-wave | |
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| Phonons in cuprates | |
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| Magnetic properties | |
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| Stripe phase | |
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| Chains in YBCO | |
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| Acoustic measurements in cuprates | |
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| Effect of pressure | |
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| Normal-state properties | |
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| Pseudogap | |
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| Pseudogap temperature T* | |
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| Structural transitions above T[subscript c] | |
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| Magnetic ordering in the undoped region | |
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| Theory | |
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| Applications | |
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| Small-scale applications | |
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| Large-scale applications | |
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| A final remark | |
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| Cuprates: Anomaly in Tunneling Spectra | |
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| Tunneling measurements in Bi2212 | |
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| Measurements below T[subscript c] | |
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| Measurements above T[subscript c] | |
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| Normalization procedure | |
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| Contribution from the superconducting condensate | |
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| Tunneling measurements in YBCO | |
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| Nonlinear Excitations: Solitons | |
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| Introduction | |
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| Russell's discovery | |
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| Korteweg-de Vries equation | |
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| Numerical simulations | |
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| Particle-like properties | |
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| Frenkel-Kontorova solitons | |
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| Topological solitons in a chain of pendulums | |
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| Different categories of solitons | |
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| The KdV solitons | |
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| The topological solitons | |
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| The envelope solitons | |
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| Solitons in real systems | |
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| Solitons in the superconducting state | |
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| Topological solitons in polyacetylene | |
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| Magnetic solitons | |
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| Self-trapped states: the Davydov soliton | |
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| Discrete breathers | |
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| Structural phase transitions | |
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| Tunneling and the soliton theory | |
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| Modern solitons | |
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| Neither a wave nor a particle | |
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| Evidence for Soliton-Like Excitations in Cuprates | |
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| Tunneling measurements in Bi2212 | |
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| Underdoped Bi2212 | |
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| Overdoped Bi2212 | |
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| Ni-doped Bi2212 | |
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| Two components in tunneling spectra | |
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| "Second-harmonic" humps | |
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| Bisoliton-solution fits | |
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| Single-soliton fit | |
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| Tunneling pseudogap | |
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| Tunneling measurements in YBCO | |
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| Acoustic measurements in LSCO | |
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| Nickelates and manganites | |
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| NMR measurements in La[subscript 2]NiO[subscript 4.17] | |
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| Tunneling measurements in La[subscript 1.4]Sr[subscript 1.6]Mn[subscript 2]O[subscript 7] | |
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| Bisoliton Model of High-T[subscript C] Superconductivity | |
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| The bisoliton model | |
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| Small density of doped charge carries | |
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| Large density of doped charge carries | |
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| The Coulomb repulsion | |
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| Stability of the bisolitons | |
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| Bisoliton superconductivity | |
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| The critical temperature | |
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| Superconductivity in cuprates | |
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| A concluding remark | |
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| The Bisoliton Model and Data | |
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| Main results of the bisoliton model | |
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| Phase coherence in cuprates | |
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| Pairing characteristics of cuprates | |
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| Polaron and bisoliton energy levels | |
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| The coupling parameter g | |
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| Doping dependence of g and the energy gap in Bi2212 | |
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| Bisoliton mass | |
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| Coherence length | |
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| Tunneling characteristics | |
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| Phonon spectrum in Bi2212 | |
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| Electron-doped NCCO | |
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| Concluding remarks | |
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| Key experiments for bisoliton superconductivity | |
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| The Mechanism of C-Axis Phase Coherence | |
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| Superconductivity and magnetism | |
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| Superconductivity and antiferromagnetism | |
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| Superconductivity and ferromagnetism | |
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| Magnetically-mediated superconductivity | |
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| Characteristic features | |
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| Layered compounds with magnetic correlations | |
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| Phase coherence in cuprates | |
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| Cuprates: two energy scales | |
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| Magnetic properties | |
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| Phase-coherence properties | |
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| Magnetic resonance peak | |
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| Tunneling assisted by spin excitations in Bi2212 | |
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| Pr-doped YBCO | |
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| Theory | |
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| Concluding remarks | |
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| The Mechanism of High-T[subscript C] Superconductivity | |
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| A general description of the mechanism | |
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| Important elements of high-T[subscript c] superconductivity | |
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| Pairing mechanism | |
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| Phase diagram | |
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| Phase-coherence mechanism | |
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| Symmetry of the order parameters | |
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| In-plane coherence lengths | |
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| Effect of impurities | |
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| Key experiments | |
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| Future theory | |
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| Interpretation of some experiments | |
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| Interesting facts | |
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| Organic and heavy-fermion superconductors | |
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| High-T[subscript C] Superconductivity Could be Predicted | |
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| Back in 1985 | |
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| A-15 superconductors | |
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| Chevrel phases | |
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| Cuprates | |
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| Principles of Superconductivity | |
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| Different Types of Superconductivity | |
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| Pairing mechanisms | |
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| Phase-coherence mechanisms | |
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| Different combinations | |
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| Superconductivity in Two Dimensions | |
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| Room-Temperature Superconductivity | |
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| Analysis of Tunneling Measurements in Cuprates | |
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| Introduction | |
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| Excitation spectrum of a Bose-Einstein condensate | |
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| Two energy gaps in cuprates | |
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| Bi2212 | |
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| YBCO and Tl2201 | |
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| Phase diagram | |
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| Two energy gaps in magnetic field | |
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| Pseudogap | |
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| Pairing gap and pseudogap | |
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| Two contributions to tunneling spectra | |
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| SIN and SIS junctions of cuprates | |
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| Subgap | |
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| Temperature dependence | |
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| Superconducting state | |
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| Normal state | |
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| The Josephson product | |
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| Zero-bias conductance peak | |
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| Zn and Ni doping in Bi2212 | |
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| Vortex-core states | |
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| NCCO | |
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| Symmetry of the order parameters | |
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| Two energy scales | |
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| Pseudogap | |
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| SIS-junction fit | |
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| Bisoliton fit | |
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| Height of quasiparticle peaks | |
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| Bisoliton fit in numbers | |
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| SIS-junction fit | |
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| References | |
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| Index | |