Photo-excited Carrier Dynamics and Impact Excitation Cascade in Graphene
arXiv:1209.4346 · doi:10.1103/PhysRevB.87.155429
Abstract
Photo-excitation in solids can trigger a cascade in which multiple particle-hole excitations are generated. We analyze the carrier multiplication cascade of impact excitation processes in graphene and show that the number of pair excitations has a strong dependence on doping, which makes carrier multiplication gate-tunable. We also predict that the number of excited pairs as well as the characteristic time of the cascade scale linearly with photo-excitation energy. These dependences, as well as sharply peaked angular distribution of pair excitations, provide clear experimental signatures of carrier multiplication.
References in corpus (8)
- Dielectric function, screening, and plasmons in 2D graphene
- Photo-excitation Cascade and Multiple Carrier Generation in Graphene
- First direct observation of Dirac fermions in graphite
- Ultrafast Photoluminescence from Graphene
- The Role of Electron-electron Interactions in Graphene ARPES Spectra
- Slow imbalance relaxation and thermoelectric transport in graphene
- Electron-Hole Generation and Recombination Rates for Coulomb Scattering in Graphene
- Inelastic carrier lifetime in graphene
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