Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1546068 | Physica E: Low-dimensional Systems and Nanostructures | 2009 | 5 Pages |
Abstract
We perform first-principle calculations to study the geometric and electronic structures of cobalt silicide (CoSi2) nanosheet and nanotubes. The structure of layered CoSi2 is characterized by a CoSi2 nanosheet, analogous to the (1 1 1) surface of CoSi2 crystal. The strain energy involved in rolling up a CoSi2 nanosheet to CoSi2 nanotubes is very low. Both the CoSi2 nanosheet and nanotubes are energetically stable. CoSi2 nanotubes prefer to form bundles to further release strain energy. All CoSi2 nanotubes exhibit uniformly metallicity and steady work functions, independent of tube chirality.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Tao He, Hongyu Zhang, Zhenhai Wang, Xuejuan Zhang, Zexiao Xi, Xiangdong Liu, Mingwen Zhao, Yueyuan Xia, Liangmo Mei,