Doniach diagram for ordered, disordered and underscreened Kondo lattices

B. Coqblin, J. R. Iglesias, N. B. Perkins, S. G. Magalhães, F. M. Zimmer

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The Doniach's diagram has been originally proposed to describe the competition between the local Kondo effect and the inter-site RKKY interactions in cerium compounds. Here we discuss the extension of this diagram to different variations of Kondo lattice model. We consider (a) ordered cerium compounds where the competition between magnetic order and Kondo effect plays an important role, as in CeRh2Si2, (b) disordered cerium systems with competing spin glass phase, magnetic ordered phases and a Kondo phase, as in the heavy fermion cerium alloy CeCux Ni1 - x and (c) uranium compounds where a coexistence between Kondo effect and ferromagnetic order has been observed, as in UTe. We show that all these cases can be described by a generalized Doniach phase diagram.

Original languageEnglish (US)
Pages (from-to)1989-1994
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume320
Issue number14
DOIs
StatePublished - Jul 1 2008

Keywords

  • Cerium compounds
  • Kondo lattice
  • Underscreened Kondo effect
  • Uranium compounds

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