Tuning the properties of exciton complexes in self-assembled GaSb/GaAs quantum rings

• Main Authors: Ahmad Kamarudin, Mazliana, Hayne, Manus, Young, Robert J., Zhuang, Qian Dong, Ben, Teresa, Molina, Sergio I.
• Format: Article
• Language: English
• Published: American Physical Society 2011
• Online Access: http://psasir.upm.edu.my/id/eprint/24802/1/Tuning%20the%20properties%20of%20exciton%20complexes%20in%20self.pdf; http://psasir.upm.edu.my/id/eprint/24802/; http://dx.doi.org/10.1103/PhysRevB.83.115311

Type-II self-assembled GaSb/GaAs nanostructures have been grown by molecular-beam epitaxy and studied by atomic-force microscopy, transmission electron microscopy, and power-dependent magnetophotoluminescence. Nanostructures on the sample surface are found to be entirely dotlike, while capped nanost...