Current Problems in Condensed Matter

1. Front Matter

   Pages i-xi

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2. Spin Fluctuation Effects in High-T _c Superconductors

   • Sören Grabowski, Jörg Schmalian, K. H. Bennemann

   Pages 1-9

3. Superconductivity and Magnetism in f Electronic Systems

   • R. Escudero, F. Morales, A. Briggs, P. Monceau

   Pages 11-25

4. Intermediate Valence Model for Tl2Mn2O7

   • C. I. Ventura, B. Alascio

   Pages 27-34

5. Spin Density Waves in Dimerized Systems

   • S. Caprara, M. Avignon, O. Navarro

   Pages 35-44

6. Bond-Order-Wave versus Spin-Density-Wave Dimerization in Polyacetylene

   • G. M. Pastor, M. B. Lepetit

   Pages 45-52

7. Impurity States in Kondo Insulators

   • P. Schlottmann

   Pages 53-72

8. Real-Space Ground-State of a Generalized Hubbard Model

   • O. Navarro, E. Flores, M. Avignon

   Pages 73-78

9. Coherent and Ultracoherent States in Hubbard and Related Models

   • K. A. Penson, A. I. Solomon

   Pages 79-85

10. What is Noncollinear Magnetism?

    • Peter Weinberger

    Pages 87-93

11. Spectral Properties of Transition Metal Compounds and Metal-Insulator Transition: A Systematic Approach within the Dynamical Mean Field Theory

    • P. Lombardo, M. Avignon, J. Schmalian, K. H. Bennemann

    Pages 95-108

12. Theoretical Study of the Metal-Nonmetal Transition in Transition Metal Clusters

    • F. Aguilera-Granja, J. A. Alonso, J. M. Montejano-Carrizales

    Pages 109-117

13. First-Principles Langevin Molecular Dynamics Studies of Metallic and Semiconductor Clusters

    • Luis Carlos Balbás

    Pages 119-132

14. Theoretical Study of the Collective Electronic Excitations of the Endohedral Clusters Na _N @C₇₈₀

    • J. M. Cabrera-Trujillo, R. Pis-Diez, J. A. Alonso, M. J. López, M. P. Iñiguez, A. Rubio

    Pages 133-141

15. Molecular Precursor of Soot and Quantification of the Associated Health Risk

    • K. Siegmann, H. C. Siegmann

    Pages 143-160

16. Magnetism of Transition Metal Clusters: Overview and Perspectives

    • G. M. Pastor

    Pages 161-175

17. Magnetic Moments of Iron Clusters: A Simple Theoretical Model

    • F. Aguilera-Granja, J. M. Montejano-Carrizales, J. L. Morán-López

    Pages 177-183

18. Magnetic Anisotropy of 3d-Transition Metal Clusters, Chains, and Thin Films

    • J. Dorantes-Dávila, G. M. Pastor

    Pages 185-193

19. Noncollinear Magnetic Structures in Small Compact Clusters

    • M. A. Ojeda-López, J. Dorantes-Dávila, G. M. Pastor

    Pages 195-202

20. Phase Transitions in Ising Square Antiferromagnets: A Controversial System

    • E. López-Sandoval, F. Aguilera-Granja, J. L. Morán-López

    Pages 203-207

This volume contains the papers presented at the International Workshop on the Cur­ rent Problems in Condensed Matter: Theory and Experiment, held at Cocoyoc, More­ los, Mexico, during January 5-9, 1997. The participants had come from Argentina, Austria, Chile, England, France, Germany, Italy, Japan, Mexico, Switzerland, and the USA. The presentations at the Workshop provided state-of-art reviews of many of the most important problems, currently under study, in condensed matter. Equally important to all the participants in the workshop was the fact that we had come to honor a friend, Karl Heinz Bennemann, on his sixty-fifth birthday. This Festschrift is just a small measure of recognition of the intellectualleadership of Professor Bennemann in the field and equally important, as a sincere tribute to his qualities as an exceptional friend, college and mentor. Those who have had the privilege to work closely with Karl have been deeply touched by Karl's inquisitive scientific mind as well as by bis kindness and generosity.

• condensed matter
• magnetism
• metals
• semiconductor
• superconductivity

• Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico

  J. L. Morán-López

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