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Comment on “Screening in gated bilayer graphene”

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Published
Article number197401
<mark>Journal publication date</mark>22/11/2010
<mark>Journal</mark>Physical Review B
Issue number19
Volume82
Number of pages4
<mark>State</mark>Published
<mark>Original language</mark>English

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.

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© 2010 The American Physical Society