Development of magnetism in strongly correlated cerium systems: Non-Kondo mechanism for moment collapse

Phys. Rev. B 62, 11533 – Published 1 November 2000
Eric M. Collins, Nicholas Kioussis, Say Peng Lim, and Bernard R. Cooper


We present an ab initio–based method which gives clear insight into the interplay between the band-f hybridization, the band-f Coulomb exchange, and the crystal-field interactions, as the degree of 4f localization is varied across a series of strongly correlated cerium systems. The predictions for the ordered magnetic moments, magnetic structure, and ordering temperatures are in excellent agreement with experiment, including the occurrence of a moment collapse of non-Kondo origin. In contrast, spin- and orbitally polarized ab initio density functional calculations and local density approximation +U calculations fail to predict, even qualitatively, the trend of the unusual magnetic properties.


  • Received 3 August 2000
  • Published in the issue dated 1 November 2000

© 2000 The American Physical Society

Authors & Affiliations

Eric M. Collins, Nicholas Kioussis, and Say Peng Lim

  • Department of Physics and Astronomy, California State University Northridge, Northridge, California 91330-8268

Bernard R. Cooper

  • Department of Physics, West Virginia University, Morgantown, West Virginia 26506-6315

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