Superconductivity on the border of itinerant-electron ferromagnetism in UGe2

SS Saxena, K Ahilan, FM Grosche, RKW Haselwimmer, MJ Steiner, E Pugh, IR Walker, [No Value] Julian, P Monthoux, GG Lonzarich*, A Huxley, [No Value] Sheikin, D Braithwaite, J Flouquet

*Bijbehorende auteur voor dit werk

    OnderzoeksoutputAcademicpeer review

    1278 Citaten (Scopus)

    Samenvatting

    The absence of simple examples of superconductivity adjoining itinerant-electron ferromagnetism in the phase diagram has for many years cast doubt on the validity of conventional models of magnetically mediated superconductivity. On closer examination, however, very few systems have been studied in the extreme conditions of purity, proximity to the ferromagnetic state and very low temperatures required to test the theory definitively. Here we report the observation of superconductivity on the border of ferromagnetism in a pure system, UGe2, which is known to be qualitatively similar to the classic d-electron ferromagnets. The superconductivity that we observe below 1 K, in a limited pressure range on the border of ferromagnetism, seems to arise from the same electrons that produce band magnetism. In this case, superconductivity is most naturally understood in terms of magnetic as opposed to lattice interactions, and by a spin-triplet rather than the spin-singlet pairing normally associated with nearly antiferromagnetic metals.

    Originele taal-2English
    Pagina's (van-tot)587-592
    Aantal pagina's6
    TijdschriftNature
    Volume406
    Nummer van het tijdschrift6796
    StatusPublished - 10-aug-2000

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