Dynamical screening in bilayer graphene
Strongly Correlated Electrons
2015-03-19 v2
Abstract
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.
Cite
@article{arxiv.1103.4597,
title = {Dynamical screening in bilayer graphene},
author = {O. V. Gamayun},
journal= {arXiv preprint arXiv:1103.4597},
year = {2015}
}
Comments
10 pages, 4 figures; references added; typos corrected; high-energy plasmon consideration added