论文标题
Kagome超导体CSV $ _3 $ SB $ _5 $中的非脱位表面对密度波
Non-degenerate surface pair density wave in the Kagome superconductor CsV$_3$Sb$_5$ -- application to vestigial orders
论文作者
论文摘要
在Kagome超导体CSV $ _3 $ SB $ _5 $的SB层上，已经观察到对密度波状态。当将高温充电顺序视为静态背景时，这些PDW状态在有效的2D Brillouin区中表现出相同的波形。有趣的是，这些PDW状态在表面上打破了相同的对称性。考虑到这种非分类PDW的存在，我们研究了对可能存在具有非零质量中心动量的残留电荷4E相的影响。为了区分不同的残留阶段，我们提出了扫描隧道显微镜实验。我们旨在提供对遗传阶段性质及其在CSV $ _3 $ _3 $ sb $ _5 $中的独特特征的见解。这项研究阐明了PDW状态之间的相互作用，电荷顺序和Kagome超导体的超导性。
On the Sb-layer of the Kagome superconductor CsV$_3$Sb$_5$, pair density wave states have been observed. When the high-temperature charge orderings are treated as static backgrounds, these PDW states exhibit the same wavevector in the effective 2D Brillouin zone. Interestingly, these PDW states break the same symmetry on the surface. Considering the presence of this non-degenerate PDW, we investigate the implications for the possible existence of a vestigial charge-4e phase with a non-zero center-of-mass momentum. To distinguish between different vestigial phases, we propose scanning tunneling microscopy experiments. We aim to provide insights into the nature of the vestigial phases and their distinct characteristics in CsV$_3$Sb$_5$. This research sheds light on the interplay between PDW states, charge orderings, and superconductivity of the Kagome superconductor.
