Metal-silicene interaction studied by scanning tunneling microscopy

Authors

Zhi Li, University of WollongongFollow
Haifeng Feng, University of WollongongFollow
Jincheng Zhuang, University of WollongongFollow
Na Pu, Beihang University
Li Wang, University of WollongongFollow
Xun Xu, University of WollongongFollow
Weichang Hao, Beijing UniversityFollow
Yi Du, University of WollongongFollow

RIS ID

104771

Publication Details

Li, Z., Feng, H., Zhuang, J., Pu, N., Wang, L., Xu, X., Hao, W. & Du, Y. (2016). Metal-silicene interaction studied by scanning tunneling microscopy. Journal of Physics Condensed Matter, 28 (3), 1-5.

Abstract

Ag atoms have been deposited on 3 x 3 silicene and √3 x √3 silicene films by molecular beam epitaxy method in ultrahigh vacuum. Using scanning tunneling microscopy and Raman spectroscopy, we found that Ag atoms do not form chemical bonds with both 3 x 3 silicene and √3 x √3 silicene films, which is due to the chemically inert surface of silicene. On 3 x 3 silicene films, Ag atoms mostly form into stable flat-top Ag islands. In contrast, Ag atoms form nanoclusters and glide on silicene films, suggesting a more inert nature. Raman spectroscopy suggests that there is more sp 2 hybridization in √3 x √3 than in √7 x √7/3 x 3 silicene films.

Grant Number

ARC/LE100100081

Grant Number

ARC/LE110100099