Screening of magnetic moments in PuAm alloy: Local density approximation and dynamical mean field theory study

J. H. Shim, K. Haule, S. Savrasov, G. Kotliar

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The puzzling absence of Pu magnetic moments in a PuAm environment is explored using the self-consistent dynamical mean field theory calculations in combination with the local density approximation. We argue that δ-Pu-Am alloys provide an ideal testbed for investigating the screening of moments from the single impurity limit to the dense limit. Several important effects can be studied: volume expansion, shift of the bare Pu on-site f energy level, and the reduction of the hybridization cloud resulting from the collective character of the Kondo effect in the Anderson lattice. These effects compensate each other and result in a coherence scale, which is independent of alloy composition, and is around 800 K.

Original languageEnglish (US)
Article number126403
JournalPhysical review letters
Volume101
Issue number12
DOIs
StatePublished - Sep 17 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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