Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2009-01-29
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
6 figures, Phys. Rev. B 79, 205435
Scientific paper
We show that, if graphene is subjected to the potential from an external superlattice, a band gap develops at the Dirac point provided the superlattice potential has broken inversion symmetry. As a numerical example, we calculate the band structure of graphene in the presence of an external potential due to periodically patterned gates arranged in a triangular graphene superlattice (TGS) with broken inversion symmetry, and find that a band gap is created at both the original and "second generation" Dirac point. The gap can be controlled, in principle, by changing the external potential and the lattice constant of the TGS.
Stroud David
Tiwari Rakesh P.
No associations
LandOfFree
Tunable Band Gap in Graphene with a Non-Centrosymmetric Superlattice Potential does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Tunable Band Gap in Graphene with a Non-Centrosymmetric Superlattice Potential, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tunable Band Gap in Graphene with a Non-Centrosymmetric Superlattice Potential will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-424123