Electron Correlations and Materials Properties

1. Front Matter

   Pages i-xiv

   PDF

2. International Workshop on Electron Correlations and Materials Properties

   1. International Workshop on Electron Correlations and Materials Properties

      • Walter Kohn

      Pages 1-2

3. Experimental Indications of Correlation Effects in Materials

   1. Front Matter

      Pages 3-3

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   2. Experimental Studies of Electron Correlation Effects in Solids

      • G. A. Sawatzky

      Pages 5-31

   3. Photoemission in Strongly Correlated Crystalline f-Electron Systems: A Need for a New Approach

      • A. J. Arko, J. J. Joyce, J. Sarrao, Z. Fisk, J. L. Smith, J. D. Thompson et al.

      Pages 33-58

   4. Heavy Electron Phenomena

      • H. R. Ott

      Pages 59-73

   5. Lattice Effects in the Light Actinides

      • A. C. Lawson, B. Cort, J. A. Roberts, B. I. Bennett, T. O. Brun, R. B. Von Dreele et al.

      Pages 75-96

   6. Anomalous Magnetic and Related Electronic Properties of Uranium Intermetallic Compounds

      • Vladimír Sechovský, Ladislav Havela, Karel Prokeš, Alexander V. Andreev

      Pages 97-113

   7. The Role of Selected f Ions in the Suppression of High-Tc Superconductivity

      • L. Soderholm, U. Staub

      Pages 115-135

   8. An Investigation of the Magnetic Fluctuations Above and Below Tc in the Heavy Fermion Superconductor UPd2A13

      • N. Bernhoeft

      Pages 137-151

   9. Non-Fermi-Liquid Properties and Exotic Superconductivity in CeCu2Si2 and (UTh)Be13

      • M. Lang, P. Gegenwart, R. Helfrich, M. Köppen, F. Kromer, C. Langhammer et al.

      Pages 153-168

   10. Onset of Magnetism and Non-Fermi Liquid Behaviour In UTX Compounds

       • L. Havela, V. Sechovský

       Pages 169-177

   11. Non-Fermi Liquid Behavior in U3-xNi3Sn4-ySingle Crystals

       • L. Shlyk, J. C. Waerenborgh, P. Estrela, L. E. De Long, A. de Visser, M. Almeida

       Pages 179-185

4. Phenomenological Studies of Correlation Effects

   1. Front Matter

      Pages 187-187

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   2. Introductory Overview and Heavy-Fermion Phenomenology

      • P. Fulde

      Pages 189-205

   3. Magnetic and Thermodynamic Properties of The 3-D Anderson Lattice Hamiltonian

      • C. Huscroft, R. T. Scalettar, A. K. McMahan, E. L. Pollock

      Pages 207-223

   4. Narrow-Band Effects in Rare-Earths and Actinides: Interaction Between The Kondo Effect and Magnetism

      • B. Coqblin, B. H. Bernhard, J. R. Iglesias, C. Lacroix, K. Le Hur

      Pages 225-250

   5. Consequences of Having Two Kinds of F-Electrons for Sce Systems as Treated By a Synthesis of Many-Body Theory and Electronic Structure

      • Bernard R. Cooper, Yeong-Lieh Lin

      Pages 251-265

   6. Effect of Disorder in the Periodic Anderson Model

      • Feng Chen, Nicholas Kioussis

      Pages 267-271

   7. Dynamical Electron Correlations in Metals: Tb-Lmto and Multiband Hubbard Hamiltonian

      • Václav Drchal, Václav Janiš, Josef Kudrnovský

      Pages 273-284

Over the last thirty years or so, the attempts to identify the electronic origins of materials properties have proceeded along two distinct and apparently divergent methodologies. On the one-hand, so-called single-particle methods are based on the study of a single electron moving in an effective field formed by the other electrons and the nuclei in the system. Band theory, as this approach is referred to, has had impressive successes in determining the equilibrium properties, such as structural stability, volume, and charge densities, of specific materials, notably metals. Today, even coherent phase diagrams (based on a single underlying lattice) for binary metallic alloys can be studied with considerable accuracy. In spite of its serious and well-understood limitations regarding the handling of correlations, band theory has been embraced by the materials scientist. Its single-particle nature endows the method with an economy of concepts which leads to a clear identification of mechanisms driving physical behavior at the electronic level. This perceived clarity often tends to override legitimate concerns regarding the validity of the method or its ability to correctly identify the mechanisms in the first place. The alternative methodology pursued in the study of quantum systems consists of what can be referred to as conventional many-body theory. This methodology is based on attempts to study explicitly the effects of interparticle correlations using a number of different formal approaches, including but not limited to, perturbation methods, Green-function equation of motion methods, configuration interactions, quantum Monte Carlo, and others.

• Metall
• alloy
• crystal
• liquid
• many-body theory
• materials properties
• metal

• Lawrence Livermore National Laboratory, Livermore

  A. Gonis

• California State University—Northridge, Northridge

  N. Kioussis

• U.S. Army Research Office, Research Triangle Park, USA

  M. Ciftan

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