Optical spectroscopy on individual CdSe/ZnMnSe quantum dots

被引：55

作者：

Bacher, G

Schömig, H

Welsch, MK

Zaitsev, S

Kulakovskii, VD

Forchel, A

Lee, S

Dobrowolska, M

Furdyna, JK

König, B

Ossau, W

机构：

[1] Univ Wurzburg, D-97074 Wurzburg, Germany

[2] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[3] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow District, Russia

[4] Kwangwoon Univ, Dept Elect Mat Engn, Seoul 139701, South Korea

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 04期

关键词：

D O I：

10.1063/1.1387256

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Optical single dot studies in wide-band gap diluted magnetic CdSe/ZnMnSe quantum dots have been performed. Due to the sample design, the photoluminescence energy of the quantum dot signal is energetically below the internal Mn2+ transition, resulting in high quantum efficiencies comparable to nonmagnetic CdSe/ZnSe quantum dots. Magnetic-field- and temperature-dependent measurements on individual dots clearly demonstrate the exchange interaction between single excitons and individual Mn2+ ions, resulting in a giant Zeeman effect and a formation of quasi-zero-dimensional magnetic polarons. (C) 2001 American Institute of Physics.

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页码：524 / 526

页数：3

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