Room temperature Optical Orientation of Exciton Spin in cubic GaN/AlN quantum dots

Details Room temperature Optical Orientation of Exciton Spin in cubic GaN/AlN quantum dots Room temperature Optical Orientation of Exciton Spin in cubic GaN/AlN quantum dots

2007-11-28

arxiv.org/abs/0711.4535v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevB.77.041304

The optical orientation of the exciton spin in an ensemble of self-organized cubic GaN/AlN quantum dots is studied by time-resolved photoluminescence. Under a polarized quasi-resonant excitation, the luminescence linear polarization exhibits no temporal decay, even at room temperature. This demonstrates the robustness of the exciton spin polarization in these cubic nitride nanostructures, with characteristic decay times longer than 10 ns.

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