论文标题
激子与CDSE/CDMN胶体纳米片中与磁离子相互作用的磁磁吗？
Magneto-optics of excitons interacting with magnetic ions in CdSe/CdMnS colloidal nanoplatelets
论文作者
论文摘要
稀释的磁性半导体中的激子代表了研究这些材料的磁性特性的出色探针。各种磁光效应敏感地取决于激子与磁离子局部旋转的交换相互作用，可用于探测。在这里，我们研究核心/壳CDSE/（CD，MN）S胶体纳米板托有稀释的磁性半导体层。使用高达15 t的高磁场来证明，磁性mn $^{2+} $离子可以证明：极化的光致发光，光学检测到的磁共振和自旋流翼拉曼散射。特别是，可以从Mn $^{2+} $ spin System的Spin-lattice放松动力学中获得有关Mn $^{2+} $浓度的信息。
Excitons in diluted magnetic semiconductors represent excellent probes for studying the magnetic properties of these materials. Various magneto-optical effects, which depend sensitively on the exchange interaction of the excitons with the localized spins of the magnetic ions can be used for probing. Here, we study core/shell CdSe/(Cd,Mn)S colloidal nanoplatelets hosting diluted magnetic semiconductor layers. The inclusion of the magnetic Mn$^{2+}$ ions is evidenced by three magneto-optical techniques using high magnetic fields up to 15 T: polarized photoluminescence, optically detected magnetic resonance, and spin-flip Raman scattering. In particular, information on the Mn$^{2+}$ concentration in the CdS shell layers can be obtained from the spin-lattice relaxation dynamics of the Mn$^{2+}$ spin system.
