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Coulomb scattering of hot electrons with electron-hole plasmas in GaAs: quantitative effects of dynamic screening (Invited Paper)
Author(s): Jeffrey F. Young; Paul J. Kelly
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Paper Abstract

The average energy loss rate (AELR, in an ensemble sense) of hot electrons via interactions with quasi-equilibrium electron-only and electron-hole plasmas in bulk GaAs is calculated exactly, within the random phase approximation (RPA). Results are presented for plasma densities ranging from 4 X 1015 cm-3 to 1 X 1019 cm-3, and for temperatures ranging from 100 K to 300 K. Comparisons are made with simpler, static screening and plasmon pole approximations. Using the full RPA result, a critical plasma density is obtained beyond which the AELR decreases. A quantitative analysis of this behavior shows that it is due to both the Pauli exclusion principle, and to a blocking mechanism that occurs when plasmon emission processes become kinematically forbidden.

Paper Details

Date Published: 1 July 1992
PDF: 11 pages
Proc. SPIE 1679, Physics and Simulation of Optoelectronic Devices, (1 July 1992); doi: 10.1117/12.60486
Show Author Affiliations
Jeffrey F. Young, National Research Council of Canada (Canada)
Paul J. Kelly, National Research Council of Canada (Canada)

Published in SPIE Proceedings Vol. 1679:
Physics and Simulation of Optoelectronic Devices

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