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Coexistence of spin-triplet superconductivity and ferromagnetism induced by the local Hund's rule exchange

Jozef Spalek·Pawel Wrobel
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Abstract

We characterize the coexistence of itinerant ferromagnetism and spin-triplet superconductivity within a single mechanism involving local (Hund's rule) exchange among $d$ electrons. The ratio of transition temperatures and the spin anisotropy of the superconducting gap is estimated for $ZrZn_2$. The $A$ phase is stable in very low applied and molecular fields, whereas the $A1$ phases persists in higher fields. A small residual magnetic moment is present below the Stoner threshold in the superconducting phase.

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Jozef Spalek, Pawel Wrobel. 2002-02-04. Coexistence of spin-triplet superconductivity and ferromagnetism induced by the local Hund's rule exchange. https://arxiv.org/abs/cond-mat/0202043

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