强关联电子体系是凝聚态物理领域的一个重要课题，也是理解高温超导的难点之一。选取或者构造简单的强关联体系以考察电子关联性对超导的影响是一个重要的研究方向。某些1T结构的过渡金属二硫族元素化合物具有强关联效应，调控其中的电子关联强度，可以导致超导电性的出现，是研究电子关联性对超导电性影响的理想平台。本项目拟通过扫描隧道显微镜/扫描隧道谱仪（STM/STS）的针尖操控或者调控技术在超导的2H-NbSe2单晶表面诱导出局域的1T-NbSe2，构造出关联电子态与超导态的界面系统，通过测量其局域电子态在空间上的演化，从微观尺度上揭示1T-NbSe2的电子结构以及电子关联性对超导的影响，对理解高温超导体的相图将有重要的启发意义。

Strong electronic correlation is one of the most important issues in condensed matter physics, which is also closely related to the mechanism of high temperature superconductivity. An appropriate model system will make great sense to investigate the influence of electronic correlation on superconductivity. As we all know, some transition metal dichalchogenides with 1T structure become superconducting if electronic correlation is weakened, which makes them the best platforms to study the impact of electronic correlation on superconductivity. In this proposal, 1T structure domains will be induced on the surface of 2H-NbSe2 single crystal by the interaction between STM tip and sample. This phenomena will naturally introduce the interface between correlated electronic and superconducting states, where we can study the interplay between them in micro-scale. It is significant to understand the electronic phase diagram of high temperature superconductors.