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Heavy quasiparticles in the ferromagnetic superconductor ZrZn2

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

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.

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S. J. C. Yates, G. Santi, S. M. Hayden, P. J. Meeson, S. B. Dugdale. 2002-07-11. Heavy quasiparticles in the ferromagnetic superconductor ZrZn2. https://doi.org/10.1103/physrevlett.90.057003

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