Comment on “Screening in gated bilayer graphene”

Fogler, M M and McCann, Edward (2010) Comment on “Screening in gated bilayer graphene”. Physical review B, 82 (19): 197401. ISSN 1550-235X

Preview

PDF
foglerPRB10.pdf - Published Version
Download (113kB)

Abstract

We analyze the response of bilayer graphene to an external transverse electric field using a variational method. A previous attempt to do so in a recent paper by Falkovsky [Phys. Rev. B 80, 113413 (2009)] is shown to be flawed. Our calculation reaffirms the original results obtained by one of us [E. McCann, Phys. Rev. B 74, 161403R (2006)] by a different method. Finally, we generalize these original results to describe a dual-gated bilayer graphene device.