Spin-orbit coupling and crystal-field splitting in the electronic and optical properties of nitride quantum dots with a wurtzite crystal structure |
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Authors: | S Schulz S Schumacher G Czycholl |
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Institution: | (1) Institute for Theoretical Physics, University of Bremen, 28359 Bremen, Germany;(2) College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA |
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Abstract: | We present an sp
3 tight-binding model for the calculation of the electronic and optical properties of wurtzite semiconductor quantum dots (QDs).
The tight-binding model takes into account strain, piezoelectricity, spin-orbit coupling and crystal-field splitting. Excitonic
absorption spectra are calculated using the configuration interaction scheme. We study the electronic and optical properties
of InN/GaN QDs and their dependence on structural properties, crystal-field splitting, and spin-orbit coupling. |
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Keywords: | PACS" target="_blank">PACS 78 67 Hc Quantum dots 73 22 Dj Single particle states 71 35 -y Excitons and related phenomena |
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