论文标题
肮脏的金属抗铁磁铁中的超导接近效果和远程三胞胎
Superconducting proximity effect and long-ranged triplets in dirty metallic antiferromagnets
论文作者
论文摘要
在超导相干长度的尺度上，抗铁磁体没有净旋转裂缝。尽管如此，已经观察到抗铁磁体以与铁磁体相似的方式抑制超导性，这种现象仍然缺乏清晰的理解。我们发现，这种效果可以通过杂质在抗铁磁体中的作用来解释。使用准经典绿色的功能，我们研究了扩散超导金属反铁磁铁双层中的接近效应和临界温度。非磁性杂质在抗铁磁铁中获得有效的磁成分。这不仅降低了临界温度，而且还将超导相关性分离为短距离且远程的组件，类似于铁磁接近系统。
Antiferromagnets have no net spin-splitting on the scale of the superconducting coherence length. Despite this, antiferromagnets have been observed to suppress superconductivity in a similar way as ferromagnets, a phenomenon that still lacks a clear understanding. We find that this effect can be explained by the role of impurities in antiferromagnets. Using quasiclassical Green's functions, we study the proximity effect and critical temperature in diffusive superconductor-metallic antiferromagnet bilayers. The non-magnetic impurities acquire an effective magnetic component in the antiferromagnet. This not only reduces the critical temperature but also separates the superconducting correlations into short-ranged and long-ranged components, similar to ferromagnetic proximity systems.
