Fine structure of exciton excited levels in a quantum dot with a magnetic ion
Fine structure of exciton excited levels in a quantum dot with a magnetic ion
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磁性离子量子点中激子激发能级的精细结构
DOI：
10.1103/physrevb.75.205313
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发表时间：
2006
影响因子：
3.7
通讯作者：
H. Mariette
中科院分区：
文献类型：
--
作者：
M. Glazov;E. Ivchenko;L. Besombes;Y. Léger;L. Maingault;H. Mariette
从理论和实验上研究了嵌入磁性离子的量子点中激子激发态的精细结构。所开发的理论考虑到带电载流子之间的库仑相互作用，在零维激子中的各向异性长程电子-空穴交换相互作用，以及电子和空穴与插入点内部的Mn离子的$d$电子的交换相互作用。根据量子点各向异性和激子-Mn耦合之间的关系，光致发光激发光谱具有定性不同的行为。它提供了一个深刻的洞察激发激子态的自旋结构。
The fine structure of excited excitonic states in a quantum dot with an embedded magnetic ion is studied theoretically and experimentally. The developed theory takes into account the Coulomb interaction between charged carriers, the anisotropic long-range electron-hole exchange interaction in the zero-dimensional exciton, and the exchange interaction of the electron and the hole with the $d$ electrons of a Mn ion inserted inside the dot. Depending on the relation between the quantum dot anisotropy and the exciton-Mn coupling, the photoluminescence excitation spectrum has a qualitatively different behavior. It provides a deep insight into the spin structure of the excited excitonic states.