標題: Robust Coherent Magneto-optical Properties of Columnar Type-II Quantum Dots in ZnTe/ZnSe and ZnMnTe/ZnSe Systems
作者: Whiteside, V. R.
Sellers, I. R.
Eginligil, M.
Oszwaldowski, R.
Petrou, A.
Zutic, I.
Chou, W-C.
Kuskovsky, I. L.
Petukhov, A. G.
Govorov, A. O.
McCombe, B. D.
電子物理學系
Department of Electrophysics
公開日期: 1-Jan-2011
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.
URI: http://dx.doi.org/10.1063/1.3666464
http://hdl.handle.net/11536/146319
ISSN: 0094-243X
DOI: 10.1063/1.3666464
期刊: PHYSICS OF SEMICONDUCTORS: 30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS
Volume: 1399
Appears in Collections:Conferences Paper