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.
Original language | English (US) |
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Article number | 233402 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 76 |
Issue number | 23 |
DOIs | |
State | Published - Dec 5 2007 |