Variable Coupling Strength of Silicene on Ag(111)
FENG Bao-Jie1 , LI Wen-Bin1 , QIU Jing-Lan1 , CHENG Peng1 , CHEN Lan1 , WU Ke-Hui1,2**
1 Institute of Physics, Chinese Academy of Sciences, Beijing 1001902 Collaborative Innovation Center of Quantum Matter, Beijing 100871
Abstract ：We perform a scanning tunneling microscopy and spectroscopy study on the electronic structures of √3 ×√3 -silicene on Ag(111). It is found that the coupling strength of √3 ×√3 -silicene with the Ag(111) substrate is variable in different regions, giving rise to notable effects in experiments. This evidence of decoupling or variable interaction of silicene with the substrate is helpful to in-depth understanding of the structure and electronic properties of silicene.
出版日期: 2015-02-26
:
73.20.At
(Surface states, band structure, electron density of states)
73.90.+f
(Other topics in electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures)
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2015, Vol. 32 
