Introduction to the Book

  • J. C. Fuggle
  • G. A. Sawatzky
  • J. W. Allen
Part of the NATO ASI Series book series (NSSB, volume 184)


The term “narrow band phenomena” is not absolutely defined but we can explain the field covered by this book as follows: the electrons in an atom or solid are in states characterized by a wave function and an energy level. These states are sub-divided into the valence levels, whose wave functions overlap in a compound, and the core levels, which are confined to the core regions of the atom. In narrow band materials there are partially filled states with characteristics between those of the localized core states and the (normally) delocalized and weakly correlated, valence states. For these systems a good understanding of the interesting physical properties requires a good, detailed determination of the electronic structure, which is not solely dominated by either band structure effects or by atomic correlations, but is strongly influenced by both.


Fermi Level Narrow Band Magnetic Impurity Ground State Property Transition Metal Compound 
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Copyright information

© Plenum Press, New York 1988

Authors and Affiliations

  • J. C. Fuggle
    • 1
  • G. A. Sawatzky
    • 2
  • J. W. Allen
    • 3
  1. 1.University of NijmegenNijmegenThe Netherlands
  2. 2.University of GroningenGroningenThe Netherlands
  3. 3.The University of MichiganAnn ArborUSA

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