Optical spectroscopy on individual CdSe/ZnMnSe quantum dots
| Autor: | M. K. Welsch, S. V. Zaitsev, V. D. Kulakovskii, Jacek K. Furdyna, W. Ossau, B. König, H. Schömig, Alfred Forchel, Seongbok Lee, Margaret Dobrowolska, Gerd Bacher |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Zeeman effect
Photoluminescence Physics and Astronomy (miscellaneous) Condensed matter physics Condensed Matter::Other Chemistry Exciton Exchange interaction Magnetic semiconductor Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter::Materials Science symbols.namesake Quantum dot symbols Spectroscopy Quantum |
| Zdroj: | Applied Physics Letters. 79:524-526 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.1387256 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|