Simple electron-electron scattering in non-equilibrium Green's function simulations

Winge, David O.; FranckiƩ, Martin; Verdozzi, Claudio; Wacker, Andreas, et al. (2016-04-12). Simple electron-electron scattering in non-equilibrium Green's function simulations. Journal of Physics: Conference Series, 696, (1)
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| Published | English
Authors:
Winge, David O. ; FranckiƩ, Martin ; Verdozzi, Claudio ; Wacker, Andreas , et al.
Department:
NanoLund: Centre for Nanoscience
Mathematical Physics
Abstract:

In this work we include electron-electron interaction beyond Hartree-Fock level in our non-equilibrium Green's function approach by a crude form of GW through the Single Plasmon Pole Approximation. This is achieved by treating all conduction band electrons as a single effective band screening the Coulomb potential. We describe the corresponding self-energies in this scheme for a multi-subband system. In order to apply the formalism to heterostructures we discuss the screening and plasmon dispersion in both 2D and 3D systems. Results are shown for a four well quantum cascade laser with different doping concentration where comparisons to experimental findings can be made.

ISSN:
1742-6588
LUP-ID:
435e130b-2f2b-4a71-baef-af91e2e25f97 | Link: https://lup.lub.lu.se/record/435e130b-2f2b-4a71-baef-af91e2e25f97 | Statistics

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