Heavy quasiparticles in the ferromagnetic superconductor ZrZn2

G. Santi; P.J. Meeson; S.B. Dugdale; S.J.C. Yates; S.M. Hayden

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Heavy quasiparticles in the ferromagnetic superconductor ZrZn2

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arxiv cond-mat/0207285 v1 pith:GBNBQCK4 submitted 2002-07-11 cond-mat.supr-con

Heavy quasiparticles in the ferromagnetic superconductor ZrZn2

S.J.C. Yates , G. Santi , S.M. Hayden , P.J. Meeson , S.B. Dugdale This is my paper

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keywords zrzn2ferromagneticsuperconductoralphenbandcalculationconsistentcoupling

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We report a study of the de Haas-van Alphen effect in the normal state of the ferromagnetic superconductor ZrZn2. Our results are generally consistent with an LMTO band structure calculation which predicts four exchange-split Fermi surface sheets. Quasiparticle effective masses are enhanced by a factor of about 4.9 implying a strong coupling to magnetic excitations or phonons. Our measurements provide insight in to the mechanism for superconductivity and unusual thermodynamic properties of ZrZn2.

Heavy quasiparticles in the ferromagnetic superconductor ZrZn2

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