Electron-Hole Generation and Recombination Rates for Coulomb Scattering in Graphene

Details Electron-Hole Generation and Recombination Rates for Coulomb Scattering in Graphene Electron-Hole Generation and Recombination Rates for Coulomb Scattering in Graphene

2007-05-09

arxiv.org/abs/0705.1204v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

13 pages, 7 figures

Scientific paper

10.1103/PhysRevB.76.155431

We calculate electron-hole generation and recombination rates for Coulomb scattering (Auger recombination and impact ionization) in Graphene. The conduction and valence band dispersion relation in Graphene together with energy and momentum conservation requirements restrict the phase space for Coulomb scattering so that electron-hole recombination times can be much longer than 1 ps for electron-hole densities smaller than $10^{12}$ cm$^{-2}$.

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