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Theoretical study of hole initiated impact ionization in bulk silicon and GaAs using a wave-vector-dependent numerical transition rate formulation within an ensemble Monte Carlo calculationIn this paper, calculations of the hole initiated interband impact ionization rate in bulk silicon and GaAs are presented based on an ensemble Monte Carlo simulation with the inclusion of a wave-vector-dependent numerical transition rate formulation. The ionization transition rate is determined for each of the three valence bands, heavy, light, and split-off, using Fermi's golden rule with a two-body, screened Coulomb interaction. The dielectric function used within the calculation is assumed to be wave-vector-dependent. Calculations of the field-dependent impact ionization rate as well as the quantum yield are presented. It is found from both the quantum yield results and examination of the hole distribution function that the effective threshold energy for hole initiated impact ionization is relatively soft, similar to that predicted for the corresponding electron initiated ionization events occur more frequently than either heavy or split-offf initiated ionization events in bulk silicon over the applied electric field strengths examined here, 250-500 kV/cm. Conversely,in GaAs, the vast majority of hole initated ionization events originate from holes within the split-off band.
Document ID
19950051692
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Oguzman, Ismail H.
(Georgia Inst. of Tech., Atlanta, GA United States)
Wang, Yang
(Georgia Inst. of Tech., Atlanta, GA United States)
Kolnik, Jan
(Georgia Inst. of Tech., Atlanta, GA United States)
Brennan, Kevin F.
(Georgia Inst. of Tech., Atlanta, GA United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1995
Publication Information
Publication: Journal of Applied Physics
Volume: 77
Issue: 1
ISSN: 0021-8979
Subject Category
Solid-State Physics
Accession Number
95A83291
Funding Number(s)
CONTRACT_GRANT: NAGW-2753
Distribution Limits
Public
Copyright
Other

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