Growth and spectroscopy of CdSe: Mn quantum dots

X. Tang, T. C M Graham, B. Urbaszek, C. Bradford, K. A. Prior, R. J. Warburton, B. C. Cavenett

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this paper we report the growth and optical properties of ZnSe/CdSe:Mn magnetic quantum dots by Atomic Layer Epitaxy. For the uncapped samples, dot densities of the order of 109 cm-2 were measured by Atomic Force Microscopy. The ensemble dot photoluminescence (PL) was observed over a range of energies between 2.1 and 2.5 eV, and a spectrally broad emission at 2.15 eV from the internal Mn2+ transition was observed at high Mn concentrations. Single dot spectroscopy was carried out by confocal microscopy and the PL line width was measured as a function of Mn concentration. For large Mn contents the temporal change in magnetization causes a broadening of the single dot PL line of up to 4 meV FWHM. However, for low concentrations the single dot PL line widths were resolution limited at <0.2 meV. © 2003 Plenum Publishing Corporation.

Original languageEnglish
Pages (from-to)19-22
Number of pages4
JournalJournal of Superconductivity and Novel Magnetism
Volume16
Issue number1
Publication statusPublished - 2003

Keywords

  • Atomic layer epitaxy
  • CdSe: Mn, magnetic
  • Photoluminescence
  • Quantum dots

Fingerprint Dive into the research topics of 'Growth and spectroscopy of CdSe: Mn quantum dots'. Together they form a unique fingerprint.

  • Cite this

    Tang, X., Graham, T. C. M., Urbaszek, B., Bradford, C., Prior, K. A., Warburton, R. J., & Cavenett, B. C. (2003). Growth and spectroscopy of CdSe: Mn quantum dots. Journal of Superconductivity and Novel Magnetism, 16(1), 19-22.