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

Research output: Contribution to journalArticle

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.

Details

Authors
Organisations
External organisations
  • Sheffield Hallam University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Condensed Matter Physics
Original languageEnglish
Article number012013
JournalJournal of Physics: Conference Series
Volume696
Issue number1
Publication statusPublished - 2016 Apr 12
Publication categoryResearch
Peer-reviewedYes

Related research output

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

Research output: ThesisDoctoral Thesis (compilation)

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