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

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • Sheffield Hallam University
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Den kondenserade materiens fysik
Originalspråkengelska
Artikelnummer012013
TidskriftJournal of Physics: Conference Series
Volym696
Utgåva nummer1
StatusPublished - 2016 apr 12
PublikationskategoriForskning
Peer review utfördJa

Relaterad forskningsoutput

David Winge, 2016 nov, Lund: Lund University, Faculty of Science, Department of Physics, Division of Mathematical Physics. 162 s.

Forskningsoutput: AvhandlingDoktorsavhandling (sammanläggning)

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