Calculation of the wave-vector-dependent interband impact-ionization transition rate in wurtzite and zinc-blende phases of bulk GaN

Jan Kolnik, Ismail H. Oguzman, Kevin F. Brennan, R. Wang, P P Ruden

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

We present calculations of the wave-vector-dependent interband impact-ionization transition rate in wurtzite and zinc-blende phases of bulk GaN. The transition rate is determined by integrating Fermi's golden rule for a two-body, screened Coulomb interaction over the possible final states using a numerically generated dielectric function and pseudowavefunctions. The full details of all relevant conduction and valence bands in zinc-blende and wurtzite GaN are included from an empirical pseudopotential calculation. It is found that the transition rate is consistent with a relatively "soft" threshold energy.

Original languageEnglish (US)
Pages (from-to)8838-8840
Number of pages3
JournalJournal of Applied Physics
Volume79
Issue number11
DOIs
StatePublished - Jun 1 1996

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