Robust Coherent Magneto-optical Properties of Columnar Type-II Quantum Dots in ZnTe/ZnSe and ZnMnTe/ZnSe Systems

被引：0

作者：

Whiteside, V. R. ^{[1
]}

Sellers, I. R. ^{[1
]}

Eginligil, M. ^{[1
]}

Oszwaldowski, R. ^{[1
]}

Petrou, A. ^{[1
]}

Zutic, I. ^{[1
]}

Chou, W-C. ^{[2
]}

Kuskovsky, I. L. ^{[3
]}

Petukhov, A. G. ^{[4
]}

Govorov, A. O. ^{[5
]}

McCombe, B. D. ^{[1
]}

机构：

[1] SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA

[2] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu, Taiwan

[3] CUNY, Queens Coll, Dept Phys & Astron, New York, NY 10021 USA

[4] South Dakota Sch Mines & Technol, Dept Phys, Rapid City, SD USA

[5] Ohio Univ, Dept Phys & Astron, Athens, OH USA

来源：

PHYSICS OF SEMICONDUCTORS: 30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS | 2011年 / 1399卷

关键词：

D O I：

10.1063/1.3666464

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present recent experimental results that show strong optical AB effects in the magneto-photoluminescence of columnar II-VI quantum dots (QDs). The AB effects manifest themselves as oscillations in the photoluminescence energy and intensity with magnetic field. It will be shown that this coherent behavior is remarkably robust, persisting at 180K. We, also, present results for a magnetic system, ZnMnTe QDs. These magnetic type-II systems also display evidence of robust magnetic ordering. This behavior is attributed to the formation of magnetic polarons caused by the exchange interaction between strongly localized holes and Mn ions within the QDs. Time-resolved PL measurements display evidence of magnetic polarons up to 200K with a binding energy of approximately 40 meV.

引用

页数：2

共 6 条

[1] Structure of Zn-Se-Te system with submonolayer insertion of ZnTe grown by migration enhanced epitaxy [J].