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

Abstract

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.

DOI: http://dx.doi.org/10.1103/PhysRevB.62.11533

  • 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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