论文标题
Yu-Shiba-Rusinov结合状态增强奇数超导性
Yu-Shiba-Rusinov bound states boost odd-frequency superconductivity
论文作者
论文摘要
我们预测，零能量Yu-shiba-rusinov（YSR）结合了两个不同的设置中的态态，金属旋转flipper-Metal-swave超导体（$ n_ {1} -sf-n_ {2} -s {2} -s $）和超导型超螺旋体 - spin-metal-metal-metal-metal-metal-metal-superconductor （$ s-n_ {1} -sf-n_ {2} -s $）交界处，可以生成表面诱导的奇数频率超导性的多重增强。另一方面，在没有这些结合状态的情况下，甚至频率超导性占主导地位。具体来说，在$ s-n_ {1} -sf-n_ {2} -s $ josephson插口中，零能量ysr绑定状态的出现导致$ 0-π$连接过渡和表面奇数频率超电导性优势。值得注意的是，在没有YSR结合状态的情况下，奇数超导性消失。有趣的是，在两个设置中，均等的自旋三个配对是表面诱导的奇数超导性的主要成分，这可能对超导旋转旋转学具有重要意义。总体而言，我们的发现可能有助于通过观察表面引起的奇数超导性来检测YSR结合状态的存在，并有助于更好地理解它们的关系。
We predict that the occurence of zero energy Yu-Shiba-Rusinov(YSR) bound states in two different setups, metal-spin flipper-metal-s-wave superconductor ($N_{1}-sf-N_{2}-S$) and superconductor-metal-spin flipper-metal-superconductor ($S-N_{1}-sf-N_{2}-S$) junctions, can generate multi-fold enhancement of surface-induced odd-frequency superconductivity. On the other hand, in the absence of these bound states, even-frequency superconductivity dominates. Specifically, in a $S-N_{1}-sf-N_{2}-S$ Josephson junction, the emergence of zero energy YSR bound states leads to a $0-π$ junction transition and surface odd-frequency superconductivity dominance. Notably, odd-frequency superconductivity vanishes in the absence of YSR-bound states. Interestingly, the equal spin-triplet pairing is the dominant component in the surface induced odd-frequency superconductivity in both setups, which could have important implications for superconducting spintronics. Overall, our findings may help to detect the presence of YSR-bound states through the observation of surface induced odd-frequency superconductivity and contribute to a better understanding of their relationship.
