Transient-level crossing of free and bound excitonic magnetic polarons in Cd 1-x Mn x Te single crystals
Transient-level crossing of free and bound excitonic magnetic polarons in Cd 1-x Mn x Te single crystals
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Cd 1-x Mn x Te 单晶中自由和束缚激子磁极化子的瞬态能级交叉
DOI：
10.1103/physrevb.63.153314
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发表时间：
2001
影响因子：
3.7
通讯作者：
Y. Oka
中科院分区：
文献类型：
--
作者：
M. Nogaku;Jinxi Shen;R. Pittini;T. Satō;Y. Oka
利用时间分辨光致发光实验研究了Cd1 − xMnxTe（x= 0.03）单晶中自由和束缚激子磁极化子的动力学行为.我们发现由自由激子形成的磁极化子比由束缚激子形成的磁极化子更稳定。因此，自由激子和施主束缚激子的光发射的峰值能量在时间分辨光致发光光谱中交叉。此外，我们还观察到，形成自由磁极化子并不需要磁局域化。
We investigated the dynamics of free and bound excitonic magnetic polarons in Cd 1− x Mn x Te (x= 0.03) single crystals by time-resolved photoluminescence experiments. We found that the magnetic polarons formed from free excitons are more stable than those formed from bound excitons. As a consequence, the peak energies of the optical emissions of free excitons and donor-bound excitons cross in the time-resolved photoluminescence spectra. Furthermore, we observed that nonmagnetic localization is not required to form free magnetic polarons.