Abstract
We study the impact of using the fully coupled electromechanical equations including piezoelectric effect and spontaneous polarization as compared to the semi-coupled approach, where the strain is solved first without piezoelectric coupling and then inserted into the equation for the electric potential. We show that for circular GaN/AlN quantum dots the fully coupled approach is needed for dots with a radius comparable to or larger than the height, however, when the radius is smaller than the height the semi-coupled approach is sufficient. We highlight this by studying the effect on the electronic structure using an effective mass approximation.
Original language | English |
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Book series | Journal of Physics: Conference Series (Online) |
Volume | 107 |
Issue number | 1 |
Pages (from-to) | 012008 |
Number of pages | 9 |
ISSN | 1742-6596 |
DOIs | |
Publication status | Published - 2008 |
Externally published | Yes |
Event | Workshop on Physics-Based Mathematical Models of Low-Dimensional Semiconductor Nanostructures: Analysis and Computation 2007 - Banff, Canada Duration: 18 Nov 2007 → 23 Nov 2007 |
Workshop
Workshop | Workshop on Physics-Based Mathematical Models of Low-Dimensional Semiconductor Nanostructures: Analysis and Computation 2007 |
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Country/Territory | Canada |
City | Banff |
Period | 18/11/2007 → 23/11/2007 |