Screening of a hypercritical charge in graphene
Mesoscale and Nanoscale Physics
2007-12-05 v3 Materials Science
Abstract
Screening of a large external charge in graphene is studied. The charge is assumed to be displaced away or smeared over a finite region of the graphene plane. The initial decay of the screened potential with distance is shown to follow the 3/2 power. It gradually changes to the Coulomb law outside of a hypercritical core whose radius is proportional to the external charge.
Keywords
Cite
@article{arxiv.0707.1023,
title = {Screening of a hypercritical charge in graphene},
author = {M. M. Fogler and D. S. Novikov and B. I. Shklovskii},
journal= {arXiv preprint arXiv:0707.1023},
year = {2007}
}
Comments
(v1) 4 pages, 1 figure (v2) Much improved introduction; extended range of numerics