Growth evolution and magneto-optical characteristics of self-assembled ZnTe/ZnMnSe quantum dots

Ling Lee*, Wen Chung Fan, Kun Feng Chien, An Jye Tzou, Wu-Ching Chou

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

The growth evolution and the magneto-optical characteristics of the self-assembled single-layer ZnTe/ZnMnSe quantum dots grown by molecular beam epitaxy were investigated. As the ZnTe coverage is above 2.0 monolayers, a Stranski-Krastanov growth process is observed with a significantly increased dot density on top of two-dimensional plateaus. As the coverage exceeds 2.7 monolayers, ripened dots dominate instead. Furthermore, a saturated degree of circular polarization of 76% at applied magnetic field of 4 T and the formation of magnetic polarons with a formation time of 7.4 ns were demonstrated.

Original languageEnglish
Pages (from-to)222-225
Number of pages4
JournalJournal of Crystal Growth
Volume378
DOIs
StatePublished - 1 Jan 2013

Keywords

  • Magneto-optic materials
  • Molecular beam epitaxy
  • Nanostructures
  • Zinc compounds

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