• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanotechnology >Probing the light hole/heavy hole switching with correlated magneto-optical spectroscopy and chemical analysis on a single quantum dot
【24h】

Probing the light hole/heavy hole switching with correlated magneto-optical spectroscopy and chemical analysis on a single quantum dot

机译：用相关磁光光谱探测灯孔/重孔切换和单量子点的化学分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A whole series of complementary studies have been performed on the same single nanowire containing a quantum dot: cathodoluminescence spectroscopy and imaging, micro-photoluminescence spectroscopy under magnetic field and as a function of temperature, and energy-dispersive x-ray spectrometry and imaging. The ZnTe nanowire was deposited on a Si3N4 membrane with Ti/Al patterns. The complete set of data shows that the CdTe quantum dot features the heavy-hole state as a ground state, although the compressive mismatch strain promotes a light-hole ground state as soon as the aspect ratio is larger than unity (elongated dot). A numerical calculation of the whole structure shows that the transition from the heavy-hole to the light-hole configuration is pushed toward values of the aspect ratio much larger than unity by the presence of a (Zn, Mg)Te shell, and that the effect is further enhanced by a small valence band offset between the semiconductors in the dot and around it.
机译：已经在含有量子点的相同单纳米线上进行了全系列互补性研究：在磁场下的阴极发光光谱和成像，微光致发光光谱和作为温度的函数，以及能量分散的X射线光谱和成像。 Znte纳米线用Ti / Al图案沉积在Si3N4膜上。 完整的数据集显示CDTE量子点具有作为接地状态的重孔状态，尽管一旦纵横比大于统一（细长点）就促进了光孔接地状态。 整个结构的数值计算表明，通过存在（Zn，mg）Te壳体的宽高比，从重孔与光孔构造的转变被推朝高于统一的纵横比的值。 通过点和周围的半导体之间的小价带偏移进一步增强了效果。

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