Abstract
The structure and electrical properties of two-dimensional (2D) sheets of silicon on a graphene substrate are studied using first-principles calculations. Two forms of corrugated silicon sheets are proposed to be energetically favorable structures. A shift of the Fermi energy level is found in both corrugated structures. Calculations of electron density show a weak coupling between the silicon layer and graphene substrate in both structures. The two forms of 2D silicon sheets turn out to be metallic and exhibit anisotropic transport properties.
| Original language | English |
|---|---|
| Article number | 093711 |
| Journal | Journal of Applied Physics |
| Volume | 114 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 7 2013 |
ASJC Scopus Subject Areas
- General Physics and Astronomy
Keywords
- Density functional theory
- Local density approximations
- First-principle calculations
- Crystal lattices
- Superlattices
- Transport properties
- Electrical properties and parameters
- Graphene
- Chemical elements
- Fermi-Dirac statistics
Disciplines
- Electrical and Computer Engineering