表面上低维碳基共价结构的精准制备及电子学性质研究

低维碳基结构是重要的低维凝聚态体系，其结构变化非常丰富。当前很多具有新奇电子学性质的低维碳基体系被理论预言，有待实验的证实。本项目利用超高真空和近常压表面在位合成技术，制备多种具有独特电子学性质的低维碳基共价结构，并基于扫描隧道显微术（STM）和宏观物性测量手段揭示其原子尺度结构和电子学性质。项目的研究内容分为两个方面：一方面，开展低维碳基结构的设计与精准制备；另一方面，开展低维碳基结构的局域电子学性质和电荷输运行为研究。结合表面在位合成技术的原子尺度精准制备能力和STM的高分辨局域结构和谱学表征能力，我们将大大拓展低维碳基结构家族，并在这类新型低维凝聚态体系中发现可能的新奇物理效应。

Low-dimensional carbon-based structure family is one of the most important low-dimensional condensed matter systems with feasible structural and electronic adjustability. To date, many low-dimensional carbon-based systems with novel electronic properties have been theoretically predicted. Experimental realization of such low-dimensional systems and confirmation of the predicted properties are urgently demanded. In this project, we will fabricate various low-dimensional carbon-based covalent structures with unique electronic properties by means of ultra-high vacuum and near-atmospheric on-surface synthesis technique, and reveal their atomic-scale structures and local electronic properties based on scanning tunneling microscopy (STM) and related macroscopic physical measurement methods. The project consists of two aspects: 1) designing and fabricating novel low-dimensional carbon-based structures and 2) investigating their local electronic properties and charge transport behaviors. Owing to the precise preparation ability of on-surface synthesis technique and the local structural and spectral characterization ability of STM on the atomic scale, we will greatly expand the family of low-dimensional carbon-based structures and unveil their novel physical properties.