Abstract
The photoluminescene signal of individual semimagnetic CdSe/Zn 0.75Mn0.25Se quantum dots is used to study the magnetization of the Mn2+ spin system in the exchange field of a single exciton. We demonstrate that by increasing the laser excitation power a significant blue shift of the photoluminescence signal occurs. This is attributed to a laser-induced demagnetization, i.e. the laser-generated carriers heat the Mn2+ spin system via spin-flip exchange scattering.
| Original language | English |
|---|---|
| Pages (from-to) | 379-382 |
| Number of pages | 4 |
| Journal | Journal of Superconductivity and Novel Magnetism |
| Volume | 16 |
| Issue number | 2 |
| Publication status | Published - 2003 |
| Externally published | Yes |
Keywords
- Diluted magnetic semiconductors
- Exciton magnetic polaron
- Nanomagnetism
- Quantum dots
- Spin heating
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Cite this
Schömig, H., Bacher, G., Forchel, A., Lee, S., Dobrowolska, M., & Furdyna, J. K. (2003). Laser-controlled magnetization in a single magnetic semiconductor quantum dot. Journal of Superconductivity and Novel Magnetism, 16(2), 379-382.