Modeling the Optical Constants of Al_xGa_<1-x>N Alloys : Condensed Matter: Electronic Properties, etc.
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概要
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We have modeled the dielectric function of wurtzite Al_xGa_<1-x>N alloys for normal polarization in the energy range up to 10 eV and for all compositions O <__- x <__- 1. The employed model takes into account one-electron contributions to the dielectric function at E_o, E_<1A>, E_<1B>, and E_<1C> critical points, as well as excitonic contributions at those critical points. The model is very flexible, due to the use of adjustable broadening function instead of the conventional Lorentzian one. Model parameters are determined by acceptance-probability-controlled simulated annealing. We obtain excellent agreement with the experimental data for all available compositions.
- 社団法人日本物理学会の論文
- 2000-12-15
著者
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Djurišić Aleksandra
Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R.C.
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Djurisic A
Univ. Hong Kong Hong Kong Chn
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Li E.
Department Of Electrical And Electronic Engineering University Of Hong Kong
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LI Herbert
Department of Electrical β Electronic Engineering, University of Hong Kong
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Li E.
Department of Electrical β Electronic Engineering, University of Hong Kong
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