Magnetic anisotropy in symmetric magnetic colloidal quantum dots doped with few Mn2+ impurities

Shun-Jen Cheng*

*Corresponding author for this work

研究成果: Article

8 引文 斯高帕斯(Scopus)

摘要

We present numerical exact diagonalization studies of the magnetism in magnetic II-VI colloidal semiconductor quantum dots charged with controlled number of electrons coupled to few magnetic-ion (Mn2+) dopants. The interplay between various relevant spin interactions and the discrete nature of Mn2+ spin distribution is shown to be essential in the magnetism of few Mn2+ -doped quantum dots. An interesting revealed feature is the existence of pronounced magnetic anisotropies in symmetric magnetic quantum dots, which are related to the orbital quenchings induced by electron-Mn spin interactions. The orbital quenching effects further lead to significant deviations of the magnetizations of randomly Mn-doped dots from the standard Brillouin-function descriptions.

原文English
文章編號245301
期刊Physical Review B - Condensed Matter and Materials Physics
79
發行號24
DOIs
出版狀態Published - 1 六月 2009

指紋 深入研究「Magnetic anisotropy in symmetric magnetic colloidal quantum dots doped with few Mn2+ impurities」主題。共同形成了獨特的指紋。

  • 引用此