Magnetoexcitons and Landau levels in strained ZnTe and ZnSe layers

S. Lee, F. Michl, U. Rössler, M. Dobrowolska, J. K. Furdyna

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Interband absorption in ultra-thin strained MBE-grown epilayers of ZnTe and ZnSe has been measured in magnetic fields up to 6 T. The spectra simultaneously uncover two effects of the magnetic field: diamagnetic shifts of exciton states, and the rich oscillatory structure arising from formation of Landau levels in the continuum. The observed spectral features are analyzed using the 8 × 8 k · p model, which takes into account the residual strain introduced during sample preparation. From this analysis we extract values for both the energy gaps and the exciton binding energies with high accuracy. Effects of electron-hole correlation and resonant magneto-polaron coupling in the continuum absorption are also discussed.

Original languageEnglish
Pages (from-to)1105-1109
Number of pages5
JournalJournal of Crystal Growth
Volume184-185
DOIs
Publication statusPublished - 1998

Keywords

  • II-VI Semiconductors
  • Landau levels
  • Magneto-polaron coupling
  • Magnetoabsorption
  • Magnetoexcitons

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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