Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
152 0 |
SM ISO690:2012 KLEEMANS, N. A.J.M., BLOKLAND, Janneke H., TABOADA, Alfonso Gonzalez, VAN GENUCHTEN, H. C.M., BOZKURT, Murat, FOMIN, Vladimir, GLADILIN, Vladimir, GRANADOS, Daniel, GARCIA, Jorge M., CHRISTIANEN, Peter C.M., MAAN, Jan Cornelius, DEVREESE, Josef T.. Excitonic behavior in self-assembled InAs/GaAs quantum rings in high magnetic fields. In: Physical Review B - Condensed Matter and Materials Physics, 2009, vol. 80, p. 0. ISSN 1098-0121. DOI: https://doi.org/10.1103/PhysRevB.80.155318 |
EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
Physical Review B - Condensed Matter and Materials Physics | |
Volumul 80 / 2009 / ISSN 1098-0121 /ISSNe 1550-235X | |
|
|
DOI:https://doi.org/10.1103/PhysRevB.80.155318 | |
Pag. 0-0 | |
Rezumat | |
We investigate the exciton energy level structure of a large ensemble of InAs/GaAs quantum rings by photoluminescence spectroscopy in magnetic fields up to 30 T for different excitation densities. The confinement of an electron and a hole in these type I quantum rings along with the Coulomb interaction suppress the excitonic Aharonov-Bohm effect. We show that the exciton energy levels are nonequidistant and split up in only two levels in magnetic field, reflecting the ringlike geometry. A model, based on realistic parameters of the self-assembled quantum rings, allows us to interpret the essential features of the observed PL spectra in terms of the calculated optical transition probabilities. |
|
Cuvinte-cheie Quantum Double, Gallium Arsenides, Ring |
|
|