Laser-controlled magnetization in a single magnetic semiconductor quantum dot

H. Schömig, G. Bacher, A. Forchel, S. 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
Externally publishedYes

Keywords

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

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Laser-controlled magnetization in a single magnetic semiconductor quantum dot'. Together they form a unique fingerprint.

  • 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.