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Title: A deterministic solver for the transport of the AlGaN/GaN 2D electron gas including hot-phonon and degeneracy effects

Abstract

The transport of the two-dimensional electron gas formed at an AlGaN/GaN heterostructure in the presence of strain polarization fields is investigated. For this purpose, we develop a deterministic multigroup model to the Boltzmann transport equations. The envelope wave functions for the confined electrons are calculated using a self-consistent Poisson-Schroedinger solver. The electron gas degeneracy and hot phonons are included in our transport equations. Numerical results are given for the dependence of macroscopic quantities on the electric field strength and on time and for the electron and phonon distribution functions. We compare our results to those of Monte Carlo simulations and with experiments.

Authors:
 [1];  [2]
  1. Institute of Theoretical and Computational Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz (Austria). E-mail: galler@itp.tu-graz.ac.at
  2. Institute of Theoretical and Computational Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz (Austria). E-mail: schuerrer@itp.tu-graz.ac.at
Publication Date:
OSTI Identifier:
20687268
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Computational Physics; Journal Volume: 210; Journal Issue: 2; Other Information: DOI: 10.1016/j.jcp.2005.04.021; PII: S0021-9991(05)00249-4; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM COMPOUNDS; BOLTZMANN EQUATION; CHARGED-PARTICLE TRANSPORT; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; DISTRIBUTION FUNCTIONS; ELECTRIC FIELDS; ELECTRON GAS; ELECTRONS; GALLIUM NITRIDES; MONTE CARLO METHOD; PHONONS; POLARIZATION; TRANSPORT THEORY; TWO-DIMENSIONAL CALCULATIONS; WAVE FUNCTIONS

Citation Formats

Galler, M., and Schuerrer, F.. A deterministic solver for the transport of the AlGaN/GaN 2D electron gas including hot-phonon and degeneracy effects. United States: N. p., 2005. Web. doi:10.1016/j.jcp.2005.04.021.
Galler, M., & Schuerrer, F.. A deterministic solver for the transport of the AlGaN/GaN 2D electron gas including hot-phonon and degeneracy effects. United States. doi:10.1016/j.jcp.2005.04.021.
Galler, M., and Schuerrer, F.. Sat . "A deterministic solver for the transport of the AlGaN/GaN 2D electron gas including hot-phonon and degeneracy effects". United States. doi:10.1016/j.jcp.2005.04.021.
@article{osti_20687268,
title = {A deterministic solver for the transport of the AlGaN/GaN 2D electron gas including hot-phonon and degeneracy effects},
author = {Galler, M. and Schuerrer, F.},
abstractNote = {The transport of the two-dimensional electron gas formed at an AlGaN/GaN heterostructure in the presence of strain polarization fields is investigated. For this purpose, we develop a deterministic multigroup model to the Boltzmann transport equations. The envelope wave functions for the confined electrons are calculated using a self-consistent Poisson-Schroedinger solver. The electron gas degeneracy and hot phonons are included in our transport equations. Numerical results are given for the dependence of macroscopic quantities on the electric field strength and on time and for the electron and phonon distribution functions. We compare our results to those of Monte Carlo simulations and with experiments.},
doi = {10.1016/j.jcp.2005.04.021},
journal = {Journal of Computational Physics},
number = 2,
volume = 210,
place = {United States},
year = {Sat Dec 10 00:00:00 EST 2005},
month = {Sat Dec 10 00:00:00 EST 2005}
}
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