AI 中文总结
本研究实现了具有本征准一维对密度调制的空气稳定二维超导体Nb2Pd3Te5，通过范德华外延合成其单层和双层结构，观测到~0.6 K下的超导性，为低维量子研究提供了新平台。
AI 中文摘要
二维（2D）超导体为研究低维超导性和新奇量子现象提供了丰富平台。将准一维（quasi-1D）结构基元引入二维超导体，是调控强电子各向异性、实现非常规超导态和各向异性超导输运功能的有效途径，但此类体系迄今很少被实现。本文报道了二维超导体Nb2Pd3Te5的实现，其具有本征准一维对密度调制。通过范德华外延法合成了单层和双层Nb2Pd3Te5，利用极低温扫描隧道显微镜/谱观测到准一维晶体结构，以及~0.6 K以下的超导性和显著的准一维对密度调制。值得注意的是，单层和双层Nb2Pd3Te5均表现出强空气稳定性。本研究为探索新奇低维量子现象和各向异性超导器件提供了原子级平整、稳定且有前景的平台。
英文摘要
Two-dimensional (2D) superconductors provide a fertile platform for exploring reduced-dimensional superconductivity and emergent quantum phenomena. Incorporating quasi-one-dimensional (quasi-1D) structural motifs into 2D superconductors offers a powerful route to engineer strong electronic anisotropy, enabling unconventional superconducting states and anisotropic superconducting transport functionalities. However, such systems remain rarely realized. Here we report the realization of a 2D superconductor Nb2Pd3Te5, exhibiting an intrinsic quasi-1D pair density modulation. Monolayer and bilayer Nb2Pd3Te5 is synthesized via van-der-Waals epitaxy. Using ultralow-temperature scanning tunneling microscopy/spectroscopy, we observe the quasi-1D crystal structure and superconductivity below ~0.6 K with a pronounced quasi-1D pair density modulation. Remarkably, both monolayer and bilayer Nb2Pd3Te5 show strong air stability. Our findings establish atomically 2D Nb2Pd3Te5 as a robust and promising platform for exploring novel low-dimensional quantum phenomena and anisotropy-enabled superconducting devices.
Comments18 pages, 4 figures
Journal refAdvanced Materials, e74711 (2026)
