Title
Electric field tuning of the band gap in graphene multilayers
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : B : solid state. - Lancaster, Pa, 1970 - 1978
Volume/pages
79(2009) :3 , p. 035421,1-035421,7
ISSN
0556-2805
ISI
000262978200119
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
A perpendicular electric field applied to multilayers of graphene modifies the electronic structure near the K point and may induce an energy gap in the electronic spectrum. This gap is tunable by the gate voltage and its size depends on the number of layers. We use a tight-binding approach to calculate the band structure and include a self-consistent calculation in order to obtain the density of charge carriers. Results are presented for systems consisting of three and four layers of graphene. The effect of the circular asymmetry of the band structure on the gap is critically examined.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/9130a7/b63f4fc8.pdf
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