立方GaN/AlN量子点中激子自旋的室温光学取向
Room temperature Optical Orientation of Exciton Spin in cubic GaN/AlN quantum dots
摘要：
利用时间分辨光致发光研究了GaN/AlN自组织立方量子点系综中激子自旋的光学取向。在偏振准共振激发下，发光线偏振即使在室温下也没有时间衰减。这证明了这些立方氮化物纳米结构中激子自旋极化的鲁棒性，其特征衰减时间长于10 ns。
英文摘要：
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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