Single Magnetic Impurities in Colloidal Quantum Dots and Magic-Size Clusters,Chemistry of Materials

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Single Magnetic Impurities in Colloidal Quantum Dots and Magic-Size Clusters
Chemistry of Materials ( IF 7.2 ) Pub Date : 2017-09-25 00:00:00 , DOI: 10.1021/acs.chemmater.7b03195
Rachel Fainblat ₁ , Charles J. Barrows ₁ , Daniel R. Gamelin ₁

Affiliation

Impurity doping can be used to dramatically alter the physical properties of semiconductor nanostructures and endow them with promising new technological potential. This review summarizes recent progress toward the development of colloidal semiconductor quantum dots (QDs) doped with individual magnetic impurity ions. Such singly doped quantum dots (SDQDs), as well as related magic-sized nanoclusters, represent an exciting class of materials for cultivating unique physical effects arising from magnetic exchange coupling between delocalized charge carriers and the single impurity ions. Key exchange effects can be enhanced by carrier confinement in such small structures. The physical properties displayed by these materials may prove valuable for new technologies based on the manipulation of individual spins in semiconductor nanostructures, such as spintronics, spin-photonics, or quantum computing. Interesting chemical and analytical challenges also emerge when exploring this research frontier. Here, we describe cluster and QD results from recent literature related to these challenges. We summarize (magneto-)optical investigations of SDQDs on both the ensemble and single-particle levels. Comparisons to analogous bulk materials and self-assembled QDs are drawn and used to highlight some of the rich and unique characteristics found within this class of materials.

中文翻译：

胶体量子点和魔术尺寸簇中的单磁性杂质

杂质掺杂可用于显着改变半导体纳米结构的物理性质，并使它们具有有前途的新技术潜力。这篇综述总结了在掺有单个磁性杂质离子的胶体半导体量子点（QD）方面的最新进展。这种单掺杂量子点（SDQD）以及相关的魔术尺寸的纳米团簇，代表了令人兴奋的一类材料，用于培养因离域电荷载流子与单个杂质离子之间的磁交换耦合而产生的独特物理效应。可以通过将载流子限制在如此小的结构中来增强密钥交换效果。这些材料所展现的物理特性可能会基于对半导体纳米结构中各个自旋的操纵而对新技术产生宝贵的影响，例如自旋电子学，自旋光子学或量子计算。探索这一研究前沿时，也将出现有趣的化学和分析挑战。在这里，我们描述了与这些挑战相关的最新文献的聚类和QD结果。我们总结了整体和单粒子水平的SDQD的（磁）光学研究。与类似的散装材料和自组装QD进行比较，以突出显示此类材料中发现的一些丰富而独特的特征。我们总结了整体和单粒子水平的SDQD的（磁）光学研究。与类似的散装材料和自组装QD进行比较，以突出显示此类材料中发现的一些丰富而独特的特征。我们总结了整体和单粒子水平的SDQD的（磁）光学研究。与类似的散装材料和自组装QD进行了比较，以突出显示在此类材料中发现的一些丰富而独特的特征。

更新日期：2017-09-26

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