Visualization of a Maze-Like Reconstruction of Graphene on a Copper Surface at the Atomic Scale  

作　　者：XIE Nan GONG Hui-Qi ZHOU Zhi GUO Xiao-Dong YAN Shi-Chao SUN Qian XING Sirui WU Wei PEI Shin-shem BAO Jiming SHAN Xin-Yan GUO Yang LU Xing-Hua 谢楠;宮会期;周智;郭晓东;颜世超;孙骞;邢思锐;吴纬;白先慎;包吉明;单欣岩;郭阳;陆兴华(The MOE Key Laboratory of Weak-Light Nonlinear Photonics,Tianjin Key Laboratory of Photonics Materials and Technology for Information Science,School of Physics,Nankai University,Tianjin 300071;Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190;Department of Electrical and Computer Engineering,University of Houston,Houston,TX 77204,USA)

机构地区：[1]The MOE Key Laboratory of Weak-Light Nonlinear Photonics,Tianjin Key Laboratory of Photonics Materials and Technology for Information Science,School of Physics,Nankai University,Tianjin 300071 [2]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190 [3]Department of Electrical and Computer Engineering,University of Houston,Houston,TX 77204,USA

出　　处：《Chinese Physics Letters》2013年第5期120-123,共4页中国物理快报（英文版）

基　　金：the National Natural Science Foundation of China under Grant Nos 11174347,61027011 and 10974245;the National Basic Research Program of China under Grant No 2012CB933002;the Chinese Academic of Sciences under Grant No 1731300500030;the Robert a Welch Foundation(E-1728);the National Science Foundation(DMR-0907336,ECCS-1240510).

摘　　要：Interaction with the substrate plays an essential role in determining the structure and electronic property of graphene supported by a surface.We observe a maze-like reconstruction pattern in graphene on flat copper foil.With functionalized scanning tunneling microscope tips,a triangular three-for-six structure of graphene and a mixed(2√2×√2)R45°reconstruction of a Cu(100)surface are separately visualized at the atomic scale.Substrate-induced changes in the structure and electronic property are further illustrated by micro-Raman spectroscopy and scanning tunneling spectroscopy.This finding suggests a new method to effectively induce partial sp3 hybridization in a single-layer graphene and therefore to tune its electronic property through interaction with the substrate.

关 键 词：SPECTROSCOPY surface PROPERTY 

分 类 号：O61[理学—无机化学]