Dynamical screening in bilayer graphene

Details Dynamical screening in bilayer graphene Dynamical screening in bilayer graphene

2011-03-23

arxiv.org/abs/1103.4597v2

Phys.Rev.B.84.085112,2011

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 4 figures; references added; typos corrected; high-energy plasmon consideration added

Scientific paper

10.1103/PhysRevB.84.085112

We calculate 1-loop polarization in bilayer graphene in the 4-band approximation for arbitrary values of frequency, momentum and doping. At low and high energy our result reduces to the polarization functions calculated in the 2-band approximation and in the case of single-layer graphehe, respectively.The special cases of static screening and plasmon modes are analyzed.

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