Electric-field tuning s-d exchange interaction in quantum dots

被引：13

作者：

Li, X. J. ^{[1
]}

Chang, Kai ^{[1
]}

机构：

[1] Chinese Acad Sci, SKLSM, Inst Semicond, Beijing 100083, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Magneto optical spectrum - S d exchange interaction - Spin splitting;

D O I：

10.1063/1.2884696

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigate theoretically the electron-hole pair states in CdTe quantum dot (QD) containing a single Mn2+ ion by the magneto-optical spectrum tuned by the electric field. It is shown that the electric field does not only tune the spin splitting via the sp-d exchange interaction but also affect significantly the anticrossing behavior in the photoluminescence spectrum. This anticrossing is caused by the s-d exchange interaction and/or the hole mixing effect, which depends sensitively on the shape of the QD. (C) 2008 American Institute of Physics.

引用

页数：3