Competition of Orbital Antiferromagnetism With Q-Triplet-Pairing in the Ferromagnetic Superconductor UGe$_2$

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Within a multicomponent BCS-like framework we study the coexistence and competition of various CDW and SC order parameters in the presence of a strong ferromagnetic background. We find that the competition of unconventional CDW, also called orbital antiferromagnet, with SC at finite momentum (${\bf Q}$-triplet pairing) shows unique characteristics like an extreme sensitivity on the deviations from nesting. We argue that pressure in UGe$_2$ creates deviations from the nesting and report a phase diagram in qualitative agreement with the observed behavior of UGe$_2$.
M2S Rio 2003

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Superconductivity, Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/21549

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0306106
 http://arxiv.org/abs/cond-mat/0306106

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arXiv