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

David O. Winge, Martin Franckié, Claudio Verdozzi, Andreas Wacker, Mauro F. Pereira

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Article number012013
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2016 Apr 12

Subject classification (UKÄ)

  • Condensed Matter Physics


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