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A Theory of Ferromagnetic Superconductors –An Analysis of Experiments on ErRh4B4 and HoMo6S8–

1982; Physical Society of Japan; Volume: 51; Issue: 11 Linguagem: Inglês

10.1143/jpsj.51.3462

1347-4073

Kazushige Machida,

Advanced Condensed Matter Physics

The coexistence problem of ferromagnetism and superconductivity is discussed theoretically. Recent experiments on the rare earth ternary compounds ErRh 4 B 4 and HoMo 6 S 8 are analyzed on the basis of the sf exchange interaction model. It is shown that the ferromagnetic molecular field effect of the sf exchange interaction is crucial in explaining the data and the spatially inhomogenous super-conducting state coexisting with ferromagnetism can describe adequately various aspects of the sinusoidally modulate magnetic structure observed in both compounds.