A structured two-dimensional Au-Si alloy

作者：Tang Lin; Li Fangsen; Guo Quanmin^*

来源：Applied Surface Science, 2011, 258(3): 1109-1114.

DOI：10.1016/j.apsusc.2011.09.046

• Si
• Au/Si alloy
• Au(111)
• STM
• Metallic glass
• One-dimensional structures

We report the formation of an ordered two-dimensional gold-silicon (Au/Si) alloy by deposition of a sub-monolayer of Si onto Au(111). Scanning tunneling microscope (STM) images show that at room temperature the Au/Si alloy consists of parallel rows with row-spacing 0.47 nm. These rows appear to float on Au(111) in bundles. Each bundle of rows can bend quite freely forming arches of arbitrary curvature. By annealing to 300 degrees C in ultra-high vacuum, the alloy changes its structure by forming straight rows with row spacing 0.35 nm.

• 出版日期2011-11-15