A simple approach for electron-electron scattering in nonequilibrium Green's function simulations
(Conference Presentation)

David O. Winge; Martin Franckie; Claudio Verozzi; Andreas Wacker; Mauro F. Pereira

doi:10.1117/12.2238613

3 November 2016 A simple approach for electron-electron scattering in nonequilibrium Green's function simulations (Conference Presentation)

David O. Winge, Martin Franckie, Claudio Verozzi, Andreas Wacker, Mauro F. Pereira

Author Affiliations +

Proceedings Volume 9934, Terahertz Emitters, Receivers, and Applications VII; 99340B (2016) https://doi.org/10.1117/12.2238613
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

Abstract

Regardless of all the success of Mid Infrared Quantum Cascade Lasers (QCLs), they still do not operate at room temperature in the THz range. The main temperature degrading mechanism for THz QCLs is not known in time of writing this abstract and it is still a topic of debate by the community [S. Khanal et al, J. Opt. 16 094001, 2014]. This is a challenge to theory and it is crucial to treat all possible scattering channels with the same mathematical footing. A summary of different methods for simulating these structures is found in [C. Jirauschek et al, Appl. Phys. Rev. 1 011307, 2014]. In this work we include and study the effects of electron-electron scattering via the Single Plasmon Pole Approximation (SPPA). In this approximation we capture both the static limit as well as dynamic effects. This gives an energy dependent (non-local in time) interaction beyond the Hartree-Fock approximation. This has been studied in a similar model with promising results [T. Schmielau and M.F. Pereira, Appl. Phys. Lett. 95 231111, 2009], and with this work we want to adapt the idea into the model described in Ref. [A. Wacker et a, IEEE Journal of Sel. Top. in Quantum Electron.,19 1200611, 2013]. We start by summarizing the theory underlying the SPPA and we show how it is implemented in the context of our formalism, by showing good agreement with the results for a four well quantum cascade laser [M. Amanti et al, New J. Phys. 11 125022, 2009].

Conference Presentation

Citation Download Citation

David O. Winge, Martin Franckie, Claudio Verozzi, Andreas Wacker, and Mauro F. Pereira "A simple approach for electron-electron scattering in nonequilibrium Green's function simulations (Conference Presentation)", Proc. SPIE 9934, Terahertz Emitters, Receivers, and Applications VII, 99340B (3 November 2016); https://doi.org/10.1117/12.2238613

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Quantum cascade lasers

Scattering

Laser scattering

Terahertz radiation

Mid-IR

Plasmons

Temperature metrology

Show All Keywords

Keywords/Phrases

Search In:

Publication Years