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  • Title: Heavy quasiparticles in the ferromagnetic superconductor ZrZn2.
    Author: Yates SJ, Santi G, Hayden SM, Meeson PJ, Dugdale SB.
    Journal: Phys Rev Lett; 2003 Feb 07; 90(5):057003. PubMed ID: 12633391.
    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 a linear muffin-tin orbital band structure which predicts four exchange-split Fermi surface sheets. Quasiparticle effective masses are enhanced by a factor of 4.9 implying a strong coupling to magnetic excitations or phonons. ZrZn2 is unique among metallic ferromagnets in that it has a very large density of states in the ferromagnetic phase.
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