2007/11/28 by D. Lagarde, Delphine Lagarde, A. Balocchi +7 · 1 citation
Chemistry · Engineering · Physics and Astronomy · #Acoustic Wave Resonator Technologies #Atomic physics #Chemistry #Condensed matter physics #Excitation #Exciton #GaN-based semiconductor devices and materials #Geometry #Luminescence #Materials science #Optics #Orientation (vector space) #Photoluminescence #Physical chemistry #Physics #Polarization (electrochemistry) #Quantum dot #Quantum mechanics #Semiconductor Quantum Structures and Devices #Spin (aerodynamics) #cond-mat.mtrl-sci #cond-mat.other
paper · pdf · doi:10.1103/physrevb.77.041304
arxiv created 2007/11/28 · openalex publication_date 2008/01/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 quasiresonant 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\phantom\rule0.3em0exns.