Enhanced magneto-optical oscillations from two-dimensional hole-gases in the presence of Mn ions
Enhanced magneto-optical oscillations from two-dimensional hole-gases in the presence of Mn ions
复制标题
Mn 离子存在下二维空穴气体的增强磁光振荡
DOI：
10.1063/1.3601477
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
B. Zvonkov
中科院分区：
文献类型：
--
作者：
A. Gazoto;M. Brasil;F. Iikawa;J. Brum;E. Ribeiro;Y. Danilov;O. Vikhrova;B. Zvonkov
我们研究了附近的Mn离子对限制在InGaAs/GaAs量子阱中的二维空穴气体光学性质的影响。我们在平均发射能和自旋分裂能上都观察到了能量振荡，而第一个在全整数填充因子下出现极大值，第二个在奇数填充因子下出现极大值。随着Mn浓度的增加，振荡的强度明显增强。此外，考虑到我们的结构的相对较低的迁移率，振荡令人惊讶地强烈和稳健，持续到相对较高的温度和激发强度。
We investigated the effects of nearby Mn ions on the optical properties of two-dimensional hole-gases confined in InGaAs/GaAs quantum wells. We observed energy oscillations on both the averaged emission and the spin-splitting energies, whereas the first one presents maxima at all integer filling factors, and the second one, solely at odd-filling factors. The strength of the oscillations clearly increases with the Mn concentration. Furthermore, considering the relatively low-mobility of our structures, the oscillations are surprisingly strong and robust, persisting up to relatively high temperatures and excitation intensities.