Aharonov-Bohm signature for neutral polarized excitons in type-II quantum dot ensembles
Aharonov-Bohm signature for neutral polarized excitons in type-II quantum dot ensembles
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DOI：
10.1103/physrevlett.92.126402
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发表时间：
2004-03-26
影响因子：
8.6
通讯作者：
Medeiros-Ribeiro, G
中科院分区：
文献类型：
--
作者：
Ribeiro, E;Govorov, AO;Medeiros-Ribeiro, G
Aharonov-Bohm效应通常被认为是带电粒子与电磁矢量势相互作用的运动的典型特征。在这里，我们提出了一个磁光致发光研究II型InP/GaAs自组装量子点，揭示了Aharonov-Bohm型振荡中性激子时，空穴基态改变其角动量从L-h=0到L-h=1，2，和3。从一个简单的模型推导出的孔环参数与该系统的结构参数非常吻合。
The Aharonov-Bohm effect is commonly believed to be a typical feature of the motion of a charged particle interacting with the electromagnetic vector potential. Here we present a magnetophotoluminescence study of type-II InP/GaAs self-assembled quantum dots, revealing the Aharonov-Bohm-type oscillations for neutral excitons when the hole ground state changes its angular momentum from L-h=0 to L-h=1, 2, and 3. The hole-ring parameters derived from a simple model are in excellent agreement with the structural parameters for this system.