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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2011

Temperature-insensitive optical alignment of the exciton in nanowire-embedded GaN quantum dots

Résumé

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

Dates et versions

hal-00999496 , version 1 (03-06-2014)

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Andrea Balocchi, J. Renard, C.T. Nguyen, B. Gayral, T. Armand, et al.. Temperature-insensitive optical alignment of the exciton in nanowire-embedded GaN quantum dots. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2011, 84 (23), pp.235310. ⟨10.1103/PhysRevB.84.235310⟩. ⟨hal-00999496⟩
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