Coexistence of Kondo effect and ferromagnetism in the Underscreened Kondo Lattice model

C. Thomas, A. S R Simões, J. R. Iglesias, C. Lacroix, N. B. Perkins, B. Coqblin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this work we use a Schrieffer-Wolff transformation in a two-fold degenerate periodic Anderson lattice to describe the coexistence of Kondo effect and ferromagnetism in some uranium and neptunium compounds. We show that the inclusion of a bandwidth for the f electrons can account for a weak delocalization of 5f electrons. Using a mean field approximation, we show that a maximum of TC versus JK can be found when the bandwidth is proportional to JK.

Original languageEnglish (US)
Title of host publicationLectures on the Physics of Strongly Correlated Systems XV - Fifteenth Training Course in the Physics of Strongly Correlated Systems
Pages266-270
Number of pages5
DOIs
StatePublished - 2011
Event15th Training Course in the Physics of Strongly Correlated Systems - Vietri sul Mare, Salerno, Italy
Duration: Oct 4 2010Oct 15 2010

Publication series

NameAIP Conference Proceedings
Volume1419
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other15th Training Course in the Physics of Strongly Correlated Systems
Country/TerritoryItaly
CityVietri sul Mare, Salerno
Period10/4/1010/15/10

Keywords

  • Kondo effect
  • Schrieffer-Wolff transformation
  • ferromagnetism

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