Merino-Díez Néstor, Li Jingcheng, Garcia-Lekue Aran, Vasseur Guillaume, Vilas-Varela Manuel, Carbonell-Sanromà Eduard, Corso Martina, Ortega J Enrique, Peña Diego, Pascual Jose I, de Oteyza Dimas G
Donostia International Physics Center (DIPC) , 20018 San Sebastián-Donostia, Spain.
CIC nanoGUNE , 20018 San Sebastián-Donostia, Spain.
J Phys Chem Lett. 2018 Jan 4;9(1):25-30. doi: 10.1021/acs.jpclett.7b02767. Epub 2017 Dec 14.
Recent advances in graphene-nanoribbon-based research have demonstrated the controlled synthesis of chiral graphene nanoribbons (chGNRs) with atomic precision using strategies of on-surface chemistry. However, their electronic characterization, including typical figures of merit like band gap or frontier band's effective mass, has not yet been reported. We provide a detailed characterization of (3,1)-chGNRs on Au(111). The structure and epitaxy, as well as the electronic band structure of the ribbons, are analyzed by means of scanning tunneling microscopy and spectroscopy, angle-resolved photoemission, and density functional theory.
基于石墨烯纳米带的研究最近取得的进展表明，利用表面化学策略可以以原子精度可控地合成手性石墨烯纳米带（chGNRs）。然而，其电子特性，包括诸如带隙或前沿能带有效质量等典型品质因数，尚未见报道。我们对Au(111)上的(3,1)-chGNRs进行了详细表征。通过扫描隧道显微镜和光谱、角分辨光电子能谱以及密度泛函理论，分析了这些纳米带的结构、外延关系以及电子能带结构。
