First-principles study of Co-doped single-walled silicon nanotubes

被引：21

作者：

He, Tao ^{[1
]}

Zhao, Mingwen ^{[1
]}

Li, Weifeng ^{[1
]}

Lin, Xiaohang ^{[1
]}

Zhang, Xuejuan ^{[1
]}

Liu, Xiangdong ^{[1
]}

Xia, Yueyuan ^{[1
]}

Mei, Liangmo ^{[1
]}

机构：

[1] Shandong Univ, Sch Phys & Microelect, Jinan 250100, Peoples R China

来源：

NANOTECHNOLOGY | 2008年 / 19卷 / 20期

关键词：

D O I：

10.1088/0957-4484/19/20/205707

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We performed spin-polarized density functional calculations to study the stable configurations, energetics and electronic structures of Co-doped single-walled silicon nanotubes (CoSi2NTs) with the stoichiometry of CoSi2. We found that the incorporation of Co atoms into the wall of SiNTs not only effectively stabilizes the tubes but also tunes their electronic properties. The formation energies of the CoSi2NTs are much lower than those of pristine SiNTs, indicating the plausibility of these tubes. The electronic structures of the CoSi2NTs display the characters of metals. This provides a promising synthetic route to stable SiNTs which may find potential applications in building nanoscale devices.

引用

页数：6