Temperature insensitive optical alignment of the exciton in nanowire embedded GaN Quantum Dots

Autor:	Balocchi, A., Renard, J., Nguyen, C. T., Gayral, B., Amand, T., Mariette, H., Daudin, B., Tourbot, G., Marie, X.
Rok vydání:	2011
Předmět:	Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.84.235310
Popis:	We report on the exciton spin dynamics of nanowire embedded GaN/AlN Quantum Dots (QDs) investigated by time-resolved photoluminescence spectroscopy. Under a linearly polarized quasiresonant excitation we evidence the quenching of the exciton spin relaxation and a temperature insensitive degree of the exciton linear polarization, demonstrating the robustness of the optical alignment of the exciton spin in these nanowire embedded QDs. A detailed examination of the luminescence polarization angular dependence shows orthogonal linear exciton eigenstates with no preferential crystallographic orientation. Comment: 13 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1107.5644 Zobrazit plný text záznamu View this record from Arxiv