Superconductivity due to co-operative Kondo effect in Pu 115's

Maxim Dzero, Piers Coleman

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

We outline key elements of a theory that accounts for anomalous properties of the PuCoGa5 and PuRhGa5 compounds as a consequence of a two-body interference between two Kondo screening channels. Virtual valence fluctuations of the magnetic Pu configurations create two conduction channels of different symmetry. Using the symplectic-large N approach, we are able to demonstrate our pairing mechanism in an exactly solvable large N limit. The critical temperature reaches its maximum when the energy levels of excited valence configurations are almost degenerate. The symmetry of the order parameter is determined by the product of the Wannier form factors in the interfering conduction channels.

Original languageEnglish (US)
Pages (from-to)955-957
Number of pages3
JournalPhysica B: Condensed Matter
Volume403
Issue number5-9
DOIs
StatePublished - Apr 1 2008

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Keywords

  • Heavy fermion superconductivity
  • Kondo lattice
  • Valence fluctuations

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