Valence Instabilities and Related Narrow-Band Phenomena

Valence Instabilities and Related Narrow-Band Phenomena

Valence Instabilities and Related Narrow-Band Phenomena

Valence Instabilities and Related Narrow-Band Phenomena

Paperback(Softcover reprint of the original 1st ed. 1977)

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Overview

Those well-intending workers, especially theorists, who have viewed hungrily the mixed valence problem, but have not yet made the bold leap, might be comforted to learn that the Rochester conference left the virginal state of that problem essentially intact. That is not to say that the event was prosaic. Indeed, the conferees exhibited a level of effervescence appropriate to the freshness and challenge of the problem at hand. If the meeting failed to solve major questions, it at least established several guidelines. One is that future experimental efforts, at least on a short time scale, might be spent most profitably on those substances which exhibit consistent, and hence probably intrinsic, behavior from laboratory to laboratory. A recurring message, not always subtle, to the·theorists was that piecemeal approaches to the mixed valence problem, characteristic of much of the work to date, are of limited usefulness. For at the core of the problem one has a melange of boot-strapping interac­ tions which must be sorted out and dealt with properly. Para­ phrasing Phil Anderson (see Epilogue), the mixed valence problem is in the same category of problems which are failing to be done in field theory these days.

Product Details

ISBN-13: 9781461588184
Publisher: Springer US
Publication date: 02/14/2012
Edition description: Softcover reprint of the original 1st ed. 1977
Pages: 562
Product dimensions: 6.69(w) x 9.61(h) x 0.05(d)

Table of Contents

Invited Papers.- Configuration-Based Ionic Energy Levels and Narrow Energy Bands.- Kondo Anomalies due to Rare Earth Impurity Ions.- Energy Width of the Mixed Valence State from Inelastic Neutron Scattering and Electron Tunneling.- Thermodynamical Behavior at Valence Instabilities.- Magnetic Excitations in Mixed Valent Materials.- The Phase Diagram and Some Aspects of the Substituted SmS Compounds.- A Phenomenological Model of the Phase Transition in SmS Alloys.- Valence Instabilities in Sm Compounds.- Physical Properties and Behavior of Allotropically Pure—-,—-, and—-Ce.- Gd3+ EPR Probe of the Determination of Valence States.- Application of Disorder to Probe the Ground State of CeAl3.- Valency Changes of Ce, Yb, and U in Intermetallic Compounds with Ni and Cu.- Theory and Experiment on SmB6.- Theoretical Approach to the Configuration Mixing in Sm Chalcogenides.- Phase Diagram for the Kondo Lattice.- Susceptibility of the Asymmetric Anderson Model: Relevance to Valence Fluctuation Compounds.- A New Rare-Earth Impurity Model Exhibiting Mixed-Valence Behaviour.- Snafu in Mixed Valence.- Mössbauer Effect Studies of Rare Earth Mixed Valent Materials.- A Theoretical Model of Mixed Valence Electronic and Elastic Properties.- Linear Response of Intermediate Valence Compounds: Mössbauer Effect and Photoelectron Emission.- Mössbauer and XPS Studies of Europium and Samarium Mixed Valent Systems.- Magnetization along Principal Directions of TmSe at High Hydrostatic Pressures.- Low Temperature Thermal Properties of Tm-Monochalcogenides.- Observation of Localized Moments, Kondo Effect, Spin Glass Regime, Magnetic Ordering in Rare Earth System with Unstable Valence.- Photoemission, X-Ray Emission and Electron Energy Loss Spectroscopy of Mixed-Valent Compounds.- PhaseDiagram, Optical and Phononic Properties of the Valence Instability of SmS.- Valence Fluctuations in Mixed Valence Compounds with Th3P4 Structure.- Experimental Studies of Narrow Band Effects in the Actinides.- Theoretical Models for Narrow Band Effects in Rare Earths and Actinides.- Epilogue.- Poster Session Papers.- Polaronic Effects on the Magnetic Susceptibility of Nonmagnetic Intermediate Valence Materials.- The Functional Integral Investigation of an Extended Friedel Anderson Model.- Anomalous Thermal Expansion of Sm1-xRxS.- A Renormalization Group Approach to the Mixed Valence Problem.- Statistical Mechanics of Intermediate Valence SmS.- Use of Standard-Basis Operators in the Configuration-Based Model of Narrow Band Solids.- Some Rare-Earth Compound Band Models Relating to Configuration Crossover and the I.C.F. Regime.- Volume Collapse in Solids.- Valencies in Lanthanide and Actinide Systems.- Configuration Shifts in Narrow Bands due to Coupling with a Broad Conduction Band.- Spin Susceptibility of Chemically Collapsed Cerium.- Effect of Additives on the Valence Transition of Cerium.- Calorimetric Studies of the—-? Transition in Ce1-xThx.- Elastic Measurements Near a Valence Transition.- Thermoelectric Power of Cerium-Based Systems.- X-Ray Photoemission from—- and—-Cerium and from—- and—-Ce0.731Th0.269.- Magnetic Behavior of Ce in (Cex(Lai1-zYz)1-x)Al2: Dynamical Susceptibility and Its Relationship to Transport Properties.- Specific Heat and Magnetization Measurements under Pressure on CeAl2 and CeAl3 Compounds.- Whither Goest Thou CeAl2?.- Thermodynamic and Transport Properties of CeAl2 in Magnetic Field.- Magnetization of TmS and TmSe and the Field Induced Transition.- Hyperfine Specific Heats of TmS and TmSe.- Kondo Resistivity of TmSe and TmS downto 20 mK.- Negative Magnetoresistance, Hall Effect and Field Induced Transition in the Kondo Systems TmSe and TmS.- Sample Dependent Magnetoresistance and Magnetization Anomalies in TmSe.- Pressure Studies of Rare Earth Singlet Ground State Systems.- Localized Sm Ion Collapse in SmS As.- Kondo Effect in Metallic SmS Films.- Effect of Pressure on the Resistivity and Magnetization of SmS, (Sm0.75Y0.20Eu0.05)S and (Sm0.95Eu0.05)S.- Pressure and Temperature Effects in Some Mixed Valence Systems.- Electronic Configuration of Sm2+ in SmS and SmB6, and Electrical Properties.- Intermediate Valence Properties of a Series of Ln4X3 Compounds with Anti-Th3P4 Structure.- Optical Properties of SmB6.- Low Energy Anomalies in the Optical Spectrum of SmS with Intermediate Valence.- Valence Related Optical Study of (Sm, Tm) Compounds.- Metal-Semiconductor Transition in Tl2Ru2O7.- Charge Transport in NiO: An Electro-Elastic and Spin-Dependent Model for the Experiments.
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