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Relaxation in Complex Systems and Related Topics

  • Book
  • © 1990

Overview

Editors:
  1. Ian A. Campbell

    1. Université Paris-Sud, Orsay, France

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    You can also search for this editor in PubMed   Google Scholar

  2. Carlo Giovannella

    1. Università di Roma-Tor Vergata, Rome, Italy

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    You can also search for this editor in PubMed   Google Scholar

Part of the book series: NATO Science Series B: (NSSB, volume 222)

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Table of contents (45 chapters)

  1. Front Matter

    Pages i-x
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  2. Relaxation and Dynamics in Magnetic Systems

    1. Front Matter

      Pages 1-1
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    2. Experiments on Spin Glass Dynamics

      • Leif Lundgren
      Pages 3-10

    3. Attempt at a Comprehensive Description of the Slow Spin Glass Dynamics

      • J. Hammann, M. Ocio, E. Vincent
      Pages 11-21

    4. Spin-Glass Dynamics in the Two-Dimensional Ising System Rb2Cu1-xCoxF4

      • A. F. M. Arts, C. Dekker, H. W. de Wijn
      Pages 23-26

    5. Cluster Model for Non-Equilibrium Relaxation in Spin Glasses

      • Y. Ueno
      Pages 27-30

    6. Some Aspects of the Dynamics of Random Anisotropy Systems

      • B. Barbara, B. Dieny, J. Filippi
      Pages 31-38

    7. Static and Dynamic Properties of Fine Magnetic Particles

      • J. L. Dormann, D. Fiorani
      Pages 39-49

    8. Kinetic Aspects of Magnetic Relaxation in Amorphous Ferromagnetic Alloys

      • P. Allia, F. Vinai
      Pages 51-59

    9. Dynamic Crossover in Dipolar Ferromagnets

      • E. Frey, F. Schwabl
      Pages 61-65

    10. Magnetic Excitations in the Disordered System Mg1-xCoxCl2

      • K. Katsumata, J. Tuchendler
      Pages 67-70

    11. Dynamic Properties of Critical and Paramagnetic Spin Fluctuations in Simple Magnets: Confrontation of Experimental and Theoretical Findings

      • Stephen W. Lovesey, Alessandro Cuccoli, Valerio Tognetti
      Pages 71-78

  3. Relaxation and Dynamics in Superconductors

    1. Front Matter

      Pages 79-79
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    2. Thermally Activated Flux Motion in High-Tc-Superconductors

      • C. W. Hagen, R. Griessen
      Pages 81-88

    3. Flux Motion in Bi2Sr2Ca1Cu2O8+x Single Crystals

      • Dino Fiorani, Alberto M. Testa
      Pages 89-94

    4. Relaxation of the Vortex Lattice in Type-II Superconductors

      • E. H. Brandt
      Pages 95-98

    5. Investigation of the Relaxation Behaviour in High Tc Superconductors

      • Michael Reissner, Robert Ambrosch, Walter Steiner
      Pages 99-104

    6. Relaxation Experiments in Short Coherence Length Superconductors

      • C. Rossel
      Pages 105-112

    7. Quasi-Equilibrium Dynamics and Non-Debye Relaxation in High Tc Granular Superconductors

      • A. Giannelli, C. Giovannella
      Pages 113-122

    8. Relaxation and Dynamics in Granular Superconductors and Superconducting Arrays

      • K. H. Lee, D. Stroud, J. S. Chung
      Pages 123-130
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Keywords

About this book

The aim of the workshop was to bring together specialists in various fields where non-exponential relaxation is observed in order to compare models and experimental results and to examine the general physical principles governing this type of behaviour. Non-exponential relaxation is found in extremely diverse physical systems all of which can be classified as complex. The form of the relaxation is generally parametrized using logarithmic, algebraic or stretched exponential decay forms. The conceptually simplest mechanism for the non-exponential decay is a spectrum of relaxation rates due to non-interacting units each of which relaxes with a different intrinsic time constant. Clear experimental examples can be given where for instance the relaxation of a collection of isolated polymer molecules leads to an overall stretched exponential decay. Non-exponential relaxation is observed in all strongly interacting complex systems (structural glasses, spin glasses, etc ... ) where each elementary unit is in interaction with many other units.

Editors and Affiliations

  • Université Paris-Sud, Orsay, France

    Ian A. Campbell

  • Università di Roma-Tor Vergata, Rome, Italy

    Carlo Giovannella

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