Visualization of a Maze-Like Reconstruction of Graphene on a Copper Surface at the Atomic Scale
XIE Nan1,2, GONG Hui-Qi2, ZHOU Zhi2, GUO Xiao-Dong2, YAN Shi-Chao2, SUN Qian1, XING Sirui3, WU Wei3, PEI Shin-shem3, BAO Jiming3, SHAN Xin-Yan2, GUO Yang2**, LU Xing-Hua2**
1The 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 2Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 3Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA
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.
(Scanning tunneling microscopy (including chemistry induced with STM))
引用本文:
. [J]. 中国物理快报, 2013, 30(5): 56802-056802.
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 . Visualization of a Maze-Like Reconstruction of Graphene on a Copper Surface at the Atomic Scale. Chin. Phys. Lett., 2013, 30(5): 56802-056802.
2013, Vol. 30 
