期刊
NANO LETTERS
卷 12, 期 7, 页码 3507-3511出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl301047g
关键词
Silicene; Ag(111); scannning tunneling microscopy; molecular beam epitaxy; first-principles calculation
类别
资金
- NSF of China [11074289, 91121003]
- MOST of China [2012CB921703, 2009CB929101]
In the search for evidence of silicene, a two-dimensional honeycomb lattice of silicon, it is important to obtain a complete picture for the evolution of Si structures on Ag(111), which is believed to be the most suitable substrate for growth of silicene so far. In this work we report the finding and evolution of several monolayer superstructures of silicon on Ag(111), depending on the coverage and temperature. Combined with first-principles calculations, the detailed structures of these phases have been illuminated. These structures were found to share common building blocks of silicon rings, and they evolve from a fragment of silicene to a complete monolayer silicene and multilayer silicene. Our results elucidate how silicene forms on Ag(111) surface and provides methods to synthesize high-quality and large-scale silicene.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据