论文标题
具有自旋密度波的磁性超导体中的杂质带
Impurity bands in magnetic superconductors with spin density wave
论文作者
论文摘要
磁性超导体定义了一类强相关的材料，其中超导性可能与局部或巡回的远程磁性共存。在这项工作中，我们考虑了无序磁性超导体的多播模型，该模型实现了非常规超导性和旋转密度波的共存。我们得出了一个精确的$ t $ -matrix，并计算该系统中状态的单个粒子密度。在纯粹的超导状态下，带间散射电势会导致局部Yu-Shiba-Rusinov结合状态的出现。我们的主要发现是，尽管存在杂质带，但在共存区域的相当广泛的区域中，超导性仍然完全glabed。我们还讨论了空间不均匀性对受污染的超导体密度密度的影响。
Magnetic superconductors define a broad class of strongly correlated materials in which superconductivity may coexist with either localized or itinerant long-range magnetic order. In this work we consider a multiband model of a disordered magnetic superconductor which realizes coexistence of unconventional superconductivity and a spin-density-wave. We derive an exact $T$-matrix and compute a single particle density of states in this system. In a purely superconducting state the interband scattering potential leads to an appearance of the localized Yu-Shiba-Rusinov bound states. Our main finding is that in the fairly broad swath of the coexistence region superconductivity remains fully gapped despite the presence of the impurity bands. We also discuss the effects of spatial inhomogeneities on the density of states in strongly contaminated superconductors.
