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New dirac fermions in periodically modulated bilayer graphene
Cited 22 time in
Web of Science
Cited 21 time in Scopus
- Authors
- Issue Date
- 2011-07
- Publisher
- American Chemical Society
- Citation
- Nano Letters, Vol.11 No.7, pp.2596-2600
- Abstract
- We investigate the effect of periodic potentials on the electronic structure of bilayer graphene and show that there is a critical value of the external potential below which new Dirac fermions are generated in the low-energy band structure, and above which a band gap is opened in the system. Our results, obtained from a self-consistent tight-binding calculation, can be simply explained by a two-band continuum model as a consequence of the pseudospin physics in graphene. The findings are robust against changes in the form of the potential, as well as bias voltages between the layers. © 2011 American Chemical Society.
- ISSN
- 1530-6984
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