Interband magnetoabsorption in strained epitaxially grown ZnTe and ZnSe

S. Lee, F. Michl, U. Rössler

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Interband absorption in ultrathin epilayers of ZnTe and ZnSe has been measured in magnetic fields up to 6 T with photon energies below and above the fundamental gap. The spectra clearly show the evolution of the (Formula presented) and (Formula presented) exciton states and of the rich structure arising from the formation of Landau levels in the continuum. The observed spectral features are analyzed using the (Formula presented) model, which takes into account the residual strain introduced during sample preparation. From this analysis we extract highly accurate values for the energy gaps and the exciton binding energies. Effects of electron-hole correlation and resonant magnetopolaron coupling are also clearly detected in the continuum absorption. We discuss the dependence of these effects on Landau quantum number and the magnetic field by comparing the experimental transition energies with calculated ones.

Original languageEnglish
Pages (from-to)9695-9704
Number of pages10
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume57
Issue number16
DOIs
Publication statusPublished - 1998

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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