Proceedings of the Yamada Conference XVIII on Superconductivity in Highly Correlated Fermion Systems

Superconductivity in Highly Correlated Fermion Systems documents the proceedings of the Yamada Conference XVIII on Superconductivity in Highly Correlated Fermion Systems held in Sendai, Japan, from August 31 to September 3, 1987.

This book compiles selected papers on the experimental and theoretical advances in the study of superconductivity. The topics include the superconductivity and magnetism in heavy-electron materials, magneto-resistance of heavy-fermion compounds, and magnetic fluctuations and order in exotic superconductors. The fabrication and properties of thin superconducting oxide films, bipolaron models of superconductors, superconducting properties of superlattices, and flux quantization on quasi-crystalline networks are also covered.

This publication is recommended for physicists and students researching on the superconductivity in highly correlated fermion systems.

Preface

Conference Committees

Opening Address

Welcome Address

Yamada Science Foundation - Executive Members of the Foundation

Chapter 1. Heavy Fermions

Superconductivity and Magnetism in Heavy-Electron Materials

Heavy Fermions and Superconductivity: "Superconducting Spectroscopy" of Non-Magnetic Impurities in CeCu2Si2

Superconducting Properties of Actinide Compounds and Other Recent Results

Quasiparticle Interactions and Nature of Pairing in Heavy Fermions

Specific Heat and Resistivity of (U, Th)Pt3

Impurity and Defect Induced Variation of Hall Effect and Magnetoresistivity of the Heavy Fermion Systems CeCu2Si2 and CeCu6

Normal and Superconducting Properties of the Magnetic Superconductor URu2Si2

Magneto-Resistance of Heavy-Fermion Compounds

Polarized Light Scattering Studies of Heavy-Fermion Superconductors

Normal Ground-State Properties of Heavy-Fermion Actinide Compounds

Attenuation of Longitudinal and Transverse Ultrasound in p- and d-Wave Superconductors

The Kondo Boson Theory of the Dynamic Susceptibility of Heavy Fermions

Spin Density Wave and Anisotropic Superconductivity in Heavy-Fermion Materials

Superconductivity of Uranium Based Metallic Glasses

Effect of Crystal Field on the Thermal Expansion Coefficients of CeCu6

Superconducting and Heavy-Fermion Behaviour in the (La1_xCex)Pd2Ge2 System

Resonant Photoemission Study of the Heavy-Fermion Superconductor CeCu2Si2 and the pseudoternary System Ce1_xLaxCu2Si2

Observation of pronounced phonon softening in the Strongly Interacting Fermi Liquid U6Fe

Ultrasonic Attenuation Experiments in Normal-State UPt3

Superconductivity and Magnetic Interactions in the Pseudoternary Bet System Ho(Rh1_xRux)4B4

Theory of Momentum-Dependent Magnetic Response in Heavy-Fermion Systems

Attractive Interactions Due to RKKY Exchange Interactions in Heavy-Electron Superconductor

Liquid 3He Revisited from a New Variational Description within a Strong Coupling Framework

Study of the degenerate Anderson Models by Using the 1 /N-Expansion Method

Quantum Monte Carlo Simulation of the One-Dimensional Periodic Anderson Model - Non-Half-filled Cases

Chapter 2. Magnetic Superconductors

A Neutron Scattering Study of the Coexistence of Magnetism and Superconductivity in HoMo6S8 Single Crystals

Metastable Superconductivity Below Tc2 in Single-Crystal HoMo6S8

Magnetic-Field-Induced Superconductivity in the Ferromagnetic State of HoMo6S8

Superconductivity and Magnetism of the Pseudoternary Rare Earth Boride Systems R(Rh1_xCox)4B4 (R = Lu, Er, Ho)

Superconductivity and Magnetism on the Bet R(Rh1_xRux)4B4 System

Strain Effects on Superconducting and Ferromagnetic Transitions of ErRh4B4

Magnetic Field Induced Superconductors, Eu0.8Sn0.2Mo6S7_ ySey

Superconducting and Magnetic Properties of CeRh4B4 and PrRh4B4

Spin Fluctuations in LURU4B4 and Superconductivity

Thermal Expansion of the Magnetic Superconductor Er0.4Ho0.6Rh4B4

Effects of the Low-Lying Phonons in Chevrel Phase Compounds Mo6Se8_xSx

Chapter 3. High-Tc Oxide Superconductors

Superconducting Glassy State in High-Tc Oxides

RBa2Cu3O7_δ (R = Rare Earth) High-Tc Magnetic Superconductors

Magnetic Fluctuations and Order in Exotic Superconductors

High-Tc Superconductivity in Perovskite-Type Oxides (Abstract)

High Temperature Superconductivity Research at Argonne National Laboratory

Oxygen Deficiency in Ba2YCu3O7_δ: The Need for a Microscopic Description

High Temperature Superconductivity Research at Houston

Fabrication and Properties of Thin Superconducting Oxide Films

Experimental Investigation of the Electronic States in high Tc Copper Oxides

Synthesis and Properties of Thin Film High-Tc Oxide Superconductors

Treatment of Y-Ba-Cu-O Superconductors by Pulsed Electric Fields and Currents

The Resonating Valence Bond State and High Temperature Superconductivity

Superconductivity in Organics and Oxides: Similarity and Dissimilarity

Electronic Structure, Charge Transfer Excitations and High Temperature Superconductivity

Crystaliochemical Aspect of High Temperature Superconducting Oxides

Superconductive Properties of Single Crystal YBa2Cu3O7

Anisotropy in the Magnetic Properties of Single-Crystal Y1Ba2Cu3O7_x

Antiferromagnetic Correlations and Superconductivity in the La2CuO4 Class of Oxides

High-Tc Superconductivity in Ln2_xBaxCu2O5 (1.0 ≤ χ ≤ 1.6) and LnBa2Cu3O7 (Ln = Dy, Er, Tm, Yb and Y) Compounds

Critical Current Density in High-Tc Y1_xLnxBa2Cu3O7_σ System

Strong-Coupling Effects and Isotope Exponents in High-Tc Superconductors

Cooperation of Superexchange and Polaron Effects as Pairing Mechanism in High-Tc Superconductors

Coulomb Interactions and Effective Strong Coupling Hamiltonians in Cu-O Superconductors

Electronic Structure Calculations for High-Tc Oxides

High-Tc Superconductivity Mediated by Charge Transfer Excitations

How Strongly are Electrons Correlated in the High-Tc, Superconducting Materials?

Variational Monte Carlo Studies of Highly Correlated Electron Systems

Bipolaron Models of Superconductors

Electron-Phonon Interaction in the New Oxide Superconductors

Fermi Liquid Theory of La2_x,SrxCuO4: Optical Properties

Exchange Enhancement of Electron-Phonon Coupling and Possible Ineffectiveness of Spin Fluctuation Coupling

Optical Studies of High-Tc Oxide Superconductors

Effects of Crystal Anisotropy on Magnetization and Magnetic Order in Superconducting RBa2Cu3O7_x

Pressure Effects on New high-Tx Superconductors

Cu NMR in the Superconducting State of ReBa2Cu3Ox

Ultrasonic Experiments on the High-Tc-Superconductor Y2_xBaxCuO4_σ

NQR and NMR of High-Tc Superconducting Oxides (La1_xBax)2CuO4_y and YBa2Cu3O7_y

Neutron and X-ray Diffraction Studies of RBa2Cu3O7_x

Specific Heat, Susceptibihty and Resistivity Measurements of High-Tc Superconductors YBa2Cu3O7_x

Superconducting and Magnetic Properties of Fe-Doped Oxide Superconductors

Critical Field, Susceptibihty and NQR Measurements on the high-Tc SuperconductorY-Ba-Cu-O

Effect of Oxygen Concentration on Superconducting Properties of Ba2YCu3O7_x

Oxygen Deficiency and Superconducting Properties of Ba-Y-Cu Oxide Compounds

Quasiparticle Tunneling and Josephson Tunneling of High-Tc Oxide Superconductors

Low-Field Anisotropic Properties of Single Crystals of Superconducting YBa2Cu3O7_σ

Anisotropic Upper Critical Magnetic Field in Single Crystal Ba2YCu3O7_y

Characterization of the High-Tc Phase and its Metamorphic Phases Ba2YCu3O7_σ

High-Tc Superconducting Properties in (Y1_xT1x)Ba2Cu3O7_ y, Y(Ba1_xKx)2Cu3O7_y and YBa2 (Cu1_xMgx)3O7_y

Superconductivity and Crystal Structure of YBa2CU2.87O6.76

High-Tc Oxide Y-Ba-Cu-O - Normal and Superconducting Properties and Phases

Thermoelectric Power in the Normal State of High-Tc Superconductors RBa2Cu3Ox (R = yttrium or Rare Earth)

Oxygen Stoichiometry and Physical Properties of High-Tc Superconducting Oxides

Superconductivity of La2CuO4 and YBa2Cu3O7

Superconductivity in Modified Systems Based on YBa2Cu3O7_σ

Specific Heat of the High-Tc Superconductors (La, M)2CuO4 and YBa2Cu3O7 in Magnetic Fields

Studies of high-Tc Oxide Superconductors

Soft-Plasmon Mechanism for High-Tc Superconductivity

Effect of Next-Nearest-Neighbor Transfer Energy on the Quasi-Two-Dimensional Superconductivity

Variational Theory of Superconductivity with Application to the Electron Gas

Many-Polaron Theory for Superconductivity in Quasi Two-Dimensional Strongly Coupled Electron-Phonon Systems

Electronic Structure, Spin Fluctuation, and Superconductivity of Extended Hubbard Model: a Possible Mechanism of High-Tc in Oxide Superconductors

Electronic Structure of Superconducting Oxide - Effect of Non-Metallic Elements

Gap Structure and Spin Excitation in High-Tc Oxides

Excitation Spectra and Bose Condensation in Superconductors with Strong Correlation

Inter-Layer Pairing Mechanism of High-Tc Superconductors

Superconducting Enhancement by One-Dimensional Charge Density Wave in the Oxide Superconductor Y-Ba-Cu-O

Low-Temperature Specific Heat of Orthorhombic and Tetragonal Phases of Ba2(RE)Cu3O7_δ (Re = Gd, Dy, Ho, Er and Tm)

Anisotropic Properties of Epitaxial Ba2YCu3O7_y Thin Films

Resistivity of EuBa2(Cu1_yZny)3Ox as a Function of Temperature, Magnetic Field, Pressure and Zn Concentration

Electronic Properties of Orthorhombic LaBa2Cu3Oy

Effect of Chemical Substitution on the High-Tc Behavior of YBa2Cu3O7

Transport Properties of High-Tc Superconducting Oxides

Investigation of Electronic and Phonon States of the High-Tc Cu-Oxide Superconductivity

The Consequences of Intergrain Josephson Coupling in Ceramic High-Temperature Superconductors

Characteristics of High-Tc Oxide Wire

Structural Investigation of Superconductors with High Transition Temperature

Magnetic and Superconducting Properties of Ba2YCu3Oy: Oxygen Concentration Dependence

Josephson Effects on YBa2Cu3O7_δ

Physical Properties of Single-Phase High-Tc Superconductor YBa2Cu3O7

Possibility of Negative Exchange Interaction Effect in Re-Ba-Cu Oxides

Transition Behavior of Magnetic Susceptibihty and Electrical Resistivity of Y-Ba-Cu-O Superconductor

High-Tc Superconductivity in (RE) Ba2Cu3Ox- Structure, Transport and Magnetism

Magnetic Ordering in the High-Tc Superconductor (RE)Ba2Cu3Ox

ESR and Magnetic Susceptibihty of High-Tc Oxide Superconductors

Superconductivity and Normal-State Properties in (Y, Sc, Ba)-Cu Oxides

Temperature Dependence of Electrical Resistivity in (La1_xYx)1.85Sr0.15CuO4 Superconductors

Superconducting Properties of the High-Tc Oxide Compounds

Transport Properties of REBa2Cu3O9_δ

Photoelectron Spectroscopy of LnBa2Cu3O7_δ(Ln = Y and Sm)

NQR Studies on Magnetic Properties of La2_xBaxCuO4

57Fe Mössbauer Effects in High-Tc Superconductor: Y-Ba-Cu Oxides

Superconducting Gap and Excitonic Mechanism of High-Tc Superconductors

Superconductivity in Hydrogen-Doped YBa2Cu3O7_x

Pressure Effect on of Y1Ba2Cu3O7_y and of La2CuO4_y

Positron Annihilation Studies of Superconductors with High Transition Temperatures

Chapter 4. Organic Superconductors

On the Superconductivity Type in the Bechgaard Salts

Mechanism of Superconductivity in Organic Superconductors

Superconductivity of the Organic Conductor, β-(BEDT-TTF)2I3 Viewed from Ηc2 and the Effect of Impurity

Chapter 5. Superconductors in Thin Films and Thin Wires

Superconducting Properties of Superlattices (Abstract)

Flux Quantization on Quasi-Crystalline Networks

Superconductivity Near the Metal-Insulator Transition

Chapter 6. Alloys and Intermetallic Compounds

Anomalous Electrical Resistivity and Structural Instability in Ti-V Alloys

High-Field Superconductivity in Rapidly Quenched Ge-M and A1xOy-M (M = Pb, Bi, Sn) Alloys

Phonon Contribution to High-Tc States in Oxide Superconductors and Nb3Ge

Studies of Crossover and Random Walks on the Chains with Coupling in A-15 Compound Structure

Post Deadline Papers

Papers Presented at the Conference, but not Published in these Proceedings

List of Contributors

Materials Index

Analytic Subject Index