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首页> 外文期刊>Physica status solidi, B. Basic research >Optically controlled magnetization of zero-dimensional magnetic polarons in CdMnTe self-assembled quantum
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Optically controlled magnetization of zero-dimensional magnetic polarons in CdMnTe self-assembled quantum

机译:CdMnTe自组装量子中零维磁极化子的光控磁化

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We find strong optically induced magnetization of zero-dimensional magnetic polarons confined to CdMnTe quantum dots. The spin alignment of magnetic ions at B = 0 T is created through circularly polarized resonant excitation and it is probed by polarization-resolved photoluminescence. This observation clearly demonstrates that in the CdMnTe quantum dots the exciton spin relaxation time is significantly longer than the formation time of magnetic polaron. Importantly, the spatial confinement characteristic of quantum dots increases the stability of magnetic polarons so that significant polarizaton of the emission is observed for temperatures higher than 120 K. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. [References: 11]
机译:我们发现受限于CdMnTe量子点的零维磁极化子的强光诱导磁化强度。 B = 0 T处的磁性离子的自旋对准是通过圆偏振共振激发产生的,并通过偏振分解的光致发光进行探测。该观察清楚地表明,在CdMnTe量子点中,激子自旋弛豫时间明显长于磁极化子的形成时间。重要的是,量子点的空间限制特性提高了磁极化子的稳定性,因此在高于120 K的温度下观察到明显的发射极化。(C)2004 WILEY-VCH Verlag GmbH&Co. KGaA,Weinheim。 [参考:11]

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