Magnetically mediated superconductivity in heavy fermion compounds

N. D. Mathur, F. M. Grosche, S. R. Julian, I. R. Walker, D. M. Freye, R. K. W. Haselwimmer and G. G. Lonzarich
Additional contact information
N. D. Mathur: University of Cambridge
F. M. Grosche: MPI Chemische Physik fester Stoffe
S. R. Julian: Cavendish Laboratory and the Interdisciplinary Research Centre for Superconductivity, University of Cambridge
I. R. Walker: Cavendish Laboratory and the Interdisciplinary Research Centre for Superconductivity, University of Cambridge
D. M. Freye: Cavendish Laboratory and the Interdisciplinary Research Centre for Superconductivity, University of Cambridge
R. K. W. Haselwimmer: Cavendish Laboratory and the Interdisciplinary Research Centre for Superconductivity, University of Cambridge
G. G. Lonzarich: Cavendish Laboratory and the Interdisciplinary Research Centre for Superconductivity, University of Cambridge

Nature, 1998, vol. 394, issue 6688, 39-43

Abstract: Abstract In a conventional superconductor, the binding of electrons into the paired states that collectively carry the supercurrent is mediated by phonons — vibrations of the crystal lattice. Here we argue that, in the case of the heavy fermion superconductors CePd2Si2 and CeIn3, the charge carriers are bound together in pairs by magnetic spin–spin interactions. The existence of magnetically mediated superconductivity in these compounds could help shed light on the question of whether magnetic interactions are relevant for describing the superconducting and normal-state properties of other strongly correlated electron systems, perhaps including the high-temperature copper oxide superconductors.

Date: 1998
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DOI: 10.1038/27838

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