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 |
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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