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

WINGE, David O., FRANCKIÉ, Martin, VERDOZZI, Claudio, WACKER, Andreas and PEREIRA, Mauro (2016). Simple electron-electron scattering in non-equilibrium Green's function simulations. Journal of Physics: Conference Series, 696. (In Press)

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Official URL: http://dx.doi.org/10.1088/1742-6596/696/1/012013
Link to published version:: 10.1088/1742-6596/696/1/012013

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.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Thin Films Research Centre > Electronic Materials and Sensors Research Group
Identification Number: 10.1088/1742-6596/696/1/012013
Depositing User: Helen Garner
Date Deposited: 03 Jun 2016 13:51
Last Modified: 20 Oct 2016 00:20
URI: http://shura.shu.ac.uk/id/eprint/12549

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