Laser-controlled magnetization in a single magnetic semiconductor quantum dot

H. Schömig, G. Bacher, A. Forchel, Sang Hoon Lee, M. Dobrowolska, J. K. Furdyna

Research output: Contribution to journalArticle

4 Citations (Scopus)

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 languageEnglish
Pages (from-to)379-382
Number of pages4
JournalJournal of Superconductivity and Novel Magnetism
Volume16
Issue number2
Publication statusPublished - 2003 Dec 1
Externally publishedYes

Fingerprint

Magnetic semiconductors
Semiconductor quantum dots
Magnetization
quantum dots
Demagnetization
magnetization
Laser excitation
Lasers
Excitons
lasers
Photoluminescence
demagnetization
Scattering
blue shift
excitons
photoluminescence
heat
scattering
excitation
Hot Temperature

Keywords

  • Diluted magnetic semiconductors
  • Exciton magnetic polaron
  • Nanomagnetism
  • Quantum dots
  • Spin heating

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Schömig, H., Bacher, G., Forchel, A., Lee, S. H., 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.

Laser-controlled magnetization in a single magnetic semiconductor quantum dot. / Schömig, H.; Bacher, G.; Forchel, A.; Lee, Sang Hoon; Dobrowolska, M.; Furdyna, J. K.

In: Journal of Superconductivity and Novel Magnetism, Vol. 16, No. 2, 01.12.2003, p. 379-382.

Research output: Contribution to journalArticle

Schömig, H, Bacher, G, Forchel, A, Lee, SH, Dobrowolska, M & Furdyna, JK 2003, 'Laser-controlled magnetization in a single magnetic semiconductor quantum dot', Journal of Superconductivity and Novel Magnetism, vol. 16, no. 2, pp. 379-382.
Schömig H, Bacher G, Forchel A, Lee SH, Dobrowolska M, Furdyna JK. Laser-controlled magnetization in a single magnetic semiconductor quantum dot. Journal of Superconductivity and Novel Magnetism. 2003 Dec 1;16(2):379-382.
Schömig, H. ; Bacher, G. ; Forchel, A. ; Lee, Sang Hoon ; Dobrowolska, M. ; Furdyna, J. K. / Laser-controlled magnetization in a single magnetic semiconductor quantum dot. In: Journal of Superconductivity and Novel Magnetism. 2003 ; Vol. 16, No. 2. pp. 379-382.
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