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Comptes Rendus Physique
Volume 7, n° 1
pages 22-34 (janvier 2006)
Doi : 10.1016/j.crhy.2005.11.008
Magnetism and superconductivity of heavy fermion matter
Magnétisme et supraconductivité de la matière fermion lourd
 

Jacques Flouquet a, , Georg Knebel a, Daniel Braithwaite a, D. Aoki b, Jean-Pascal Brison c, Frédéric Hardy a, Andrew Huxley a, Stéphane Raymond a, Bernard Salce a, Ilya Sheikin d
a Département de la recherche fondamentale sur la matière condensée, SPSMS, CEA Grenoble, 17, rue des Martyrs, 38054 Grenoble cedex 9, France 
b IMR, Tohoku University, Oarai, Ibaraki 311-1313, Japan 
c Centre de recherche sur les très basses températures, CNRS, 38042 Grenoble cedex 9, France 
d Grenoble High Magnetic Field Laboratory, MPI-FKF/CNRS, BP166, 38042 Grenoble cedex 9, France 

Corresponding author.
Abstract

The interplay of magnetism and unconventional superconductivity (d singlet wave or p triplet wave) in a strongly correlated electronic system (SCES) is discussed with recent examples found in heavy fermion compounds. A short presentation is given on the formation of the heavy quasiparticle with the two sources of a local and intersite enhancement for the effective mass. Two cases of the coexistence or repulsion of antiferromagnetism and superconductivity are given with CeIn3 and CeCoIn5 . A spectacular example is the emergence of superconductivity in relatively strong itinerant ferromagnets UGe2 and URhGe. The impact of heavy fermion matter among other SCES as organic conductor or high   oxide is briefly pointed out. To cite this article: J. Flouquet et al., C. R. Physique 7 (2006).

The full text of this article is available in PDF format.
Résumé

Lʼinterférence entre magnétisme et supraconductivité non conventionnelle (de type singlet d ou triplet p) dans les systèmes électroniques fortement corrélés est discuté en prenant comme exemple les composés à fermions lourds. La formation des quasiparticules lourdes est le résultat de fluctuations locales et d une augmentation supplémentaire par les corrélations magnétiques. Nous discutons deux exemples (CeIn3 et CeCoIn5 ) de coexistence ou répulsion entre antiferromagnétisme et supraconductivité. Une surprise a été la découverte de la supraconductivité dans les composés ferromagnétiques itinérants UGe2 et URhGe. Lʼimpact des résultats obtenus sur la matière fermion lourd dans les autres systèmes fortement corrèlés comme les composés organiques ou les oxydes supraconducteurs est souligné. Pour citer cet article : J. Flouquet et al., C. R. Physique 7 (2006).

The full text of this article is available in PDF format.

Keywords : Heavy fermion, Superconductivity, Antiferromagnetism, Ferromagnetism

Mots-clés : Fermion lourd, Supraconductivité, Antiferromagnétisme, Ferromagnétisme




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