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Hot Electron Dynamics in Zincblende and Wurtzite GaN
Author(s) -
Rodrigues C.G.,
Freire V.N.,
da Costa J.A.P.,
Vasconcellos A.R.,
Luzzi R.
Publication year - 1999
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(199911)216:1<35::aid-pssb35>3.0.co;2-2
Subject(s) - wurtzite crystal structure , excited state , electron , condensed matter physics , phonon , dissipation , physics , non equilibrium thermodynamics , materials science , atomic physics , quantum mechanics , diffraction
A theoretical investigation of the excess energy dissipation of highly excited photoinjected electrons in both wurtzite and zincblende GaN is presented. The calculations are performed by solving numerically coupled quantum transport equations for the carriers and the acoustic, transversal and longitudinal optical phonon in order to derive the evolution of their nonequilibrium temperatures, dubbed quasi‐temperatures. It is shown that the electron energy dissipation is always faster in the wurtzite structure than in zincblende, both occurring in a subpicosecond time scale (< 0.2 ps).