...
首页> 外文期刊>Nanotechnology >Size-dependent magneto-optical effects in CdMnTe diluted magnetic quantum dots
【24h】

Size-dependent magneto-optical effects in CdMnTe diluted magnetic quantum dots

机译:CdMnTe稀释的磁性量子点中与尺寸有关的磁光效应

获取原文
获取原文并翻译 | 示例
           

摘要

We report on the growth and high spatial resolution magneto-photoluminescence of CdMnTe quantum dots embedded in a ZnCdTe matrix with Mn content of about 3%. The giant Zeeman spitting of excitonic emission coming from individual quantum dots and magnetization fluctuations inside them are studied in magnetic fields up to 7 T. We have found that the description of these effects requires the inclusion of antiferromagnetic Mn-Mn interaction in the considerations. Moreover, the values of the Zeeman shift are strongly related to the size of the dot. In particular, the higher spectral position of the line is, i.e., the smaller the dot, the smaller the Zeeman splitting that is observed. This effect is quantitatively explained with model calculations made under the assumption of magnetic polaron formation in diluted magnetic quantum dots and the presence of ion-ion exchange interaction.
机译:我们报道了嵌入Mn含量约为3%的ZnCdTe基质中的CdMnTe量子点的生长和高空间分辨率的磁致发光。在高达7 T的磁场中研究了来自单个量子点的激子发射的巨大Zeeman裂隙及其内部的磁化涨落。我们已经发现,要考虑到这些影响的描述,必须考虑到反铁磁Mn-Mn相互作用。此外,塞曼位移的值与点的大小密切相关。特别地,线的光谱位置越高,即,点越小,观察到的塞曼分裂越小。通过在稀释的磁性量子点中形成磁极化子并存在离子-离子交换相互作用的情况下进行的模型计算,可以定量地解释这种效应。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号