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.
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页数：3
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