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S-wave superconductivity in weak ferromagnetic metals

机译:弱铁磁性金属中的S波超导性

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摘要

We investigate the behaviour of weak ferromagnetic metals close to the ferromagnetic critical point. We show that in the limit of small magnetic moment the low temperature metallic phase is rigorously described by a local ferromagnetic Fermi liquid that has a momentum-independent self-energy. Whereas, non-Fermi liquid features develop at higher temperatures. Furthermore, we find that an instability towards s-wave superconductivity is possible when the exchange splitting is comparable to the superconducting gap.
机译:我们研究了接近铁磁临界点的弱铁磁金属的行为。我们表明,在小磁矩的限制下,低温金属相由具有动量独立自能的局部铁磁费米液体严格描述。而非费米液体则在较高温度下形成。此外,我们发现,当交换分裂可与超导间隙相当时,朝s波超导性的不稳定是可能的。

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