Topological-Defect-Induced Superstructures on Graphite Surface  

作　　者：Zi-Lin Ruan Zhen-Liang Hao Hui Zhang Shi-Jie Sun Yong Zhang Wei Xiong Xing-Yue Wang Jian-Chen Lu Jin-Ming Cai 阮子林;郝振亮;张辉;孙诗杰;张永;熊玮;王兴悦;卢建臣;蔡金明(Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650000,China)

机构地区：[1]Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650000,China

出　　处：《Chinese Physics Letters》2021年第2期74-77,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Grant Nos.11674136 and 61901200);Yunnan Province for Recruiting High-Caliber Technological Talents(Grant No.1097816002);Reserve Talents for Yunnan Young and Middle Aged Academic and Technical Leaders(Grant No.2017HB010);the Yunnan Province Science and Technology Plan Project(Grant No.2019FD041);the China Postdoctoral Science Foundation,and the Yunnan Province Postdoctoral Science Foundation.

摘　　要：Topological defects in graphene induce structural and electronic modulations.Knowing exact nature of brokensymmetry states around the individual atomic defects of graphene is very important for understanding the electronic properties of this material.We investigate structural dependence on localized electronic states in the vicinity of topological defects on a highly oriented pyrolytic graphite(HOPG)surface,using scanning tunneling microscopy and spectroscopy.Several inherent topological defects on the HOPG surface and the local density of states surrounding them are explored,visualized as scattering wave-related(√3×√3)R30∘superstructures and honeycomb superstructures.In addition,the superstructures observed near the grain boundary have a much higher decay length at specific sites than that reported previously,indicating far greater electron scattering on the quasi-periodic grain boundary.

关 键 词：spectroscopy. STRUCTURES ELECTRONIC 

分 类 号：TQ127.11[化学工程—无机化工] O469[理学—凝聚态物理]