Simple electron-electron scattering in non-equilibrium Green's function simulations
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.
Cite
@article{arxiv.1602.03997,
title = {Simple electron-electron scattering in non-equilibrium Green's function simulations},
author = {David O. Winge and Martin Franckié and Claudio Verdozzi and Andreas Wacker and Mauro F. Pereira},
journal= {arXiv preprint arXiv:1602.03997},
year = {2016}
}
Comments
11 pages, 3 figures, proceeding of the PNGF6 workshop in Lund, Sweden 2015