Abstract
We compare continuum and atomistic models for the electromechanical fields in wurtzite GaN/AlN quantum dots and their relative impact on the electronic band structure. Qualitative agreement between atomistic strain calculations and continuum elastic models for a wurtzite hexagonal quantum-dot structure is demonstrated; however, significant quantitative discrepancies of up to 100 meV are observed. A smaller difference of approximately 15 meV is found between fully coupled and semi-coupled continuum models.
Original language | English |
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Journal | Superlattices and Microstructures |
Volume | 47 |
Issue number | 1 |
Pages (from-to) | 134-138 |
ISSN | 0749-6036 |
DOIs | |
Publication status | Published - 2010 |
Externally published | Yes |
Event | 9th International Conference on Physics of Light-Matter Coupling in Nanostructures - Lecce , Italy Duration: 16 Apr 2009 → 20 Apr 2009 Conference number: 9 |
Conference
Conference | 9th International Conference on Physics of Light-Matter Coupling in Nanostructures |
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Number | 9 |
Country/Territory | Italy |
City | Lecce |
Period | 16/04/2009 → 20/04/2009 |
Keywords
- Wurtzite
- Piezoelectric
- Continuum
- Valence force field
- Electronic band structure