Skutterudite results shed light on heavy fermion physics

E. Hassinger, J. Derr, J. Levallois, D. Aoki, K. Behnia, F. Bourdarot, G. Knebel, C. Proust, J. Flouquet

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Only few selected examples among the great diversity of anomalous rare earth skutterudite are reviewed. Focus is first given on PrFe4P 12 in comparison with URu2Si2. For PrFe 4P12, great progress has been made on determining the nature of the order parameter (OP). A non magnetic order parameter with a multipolar component emerges here while for URu2Si2 the nature of the so-called hidden order remains mysterious. The two systems have several similarities in their temperature-pressure (T, P) and magnetic field-temperature (H, T) phase diagrams, in their spin dynamics, in their nesting character and in their high sensitivity to impurities. Advances on one side must stimulate new views on the other. Besides general considerations on the choice of the OP, a simple basic problem is the treatment of the Kondo coupling in a system with low charge carrier number for the cases of uncompensated and compensated semi-metal. An interesting problem is also the possible decoupling between exciton modes and itinerant carriers.

Original languageEnglish
Pages (from-to)172-179
Number of pages8
JournalJournal of the Physical Society of Japan
Issue numberSUPPL.A
StatePublished - 2008
Externally publishedYes


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