Calculation of the excitonic absorption in parabolic semiconductor quantum-well structures

A. Thränhardt, J. Hader, S. Koch

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

The absorption for a parabolic quantum well is calculated on the basis of the semiconductor Bloch equations including the full three-dimensional excitonic interaction. Analog parabolic quantum-well structures are compared to structures grown using the “digital alloy technique.” Significant differences are shown to arise in the high-field regime. The excitonic spectra are compared to single-particle spectra and experimental results published by W. Geißelbrecht et al. [Superlattices Microstruct. 23, 93 (1998)]. It is demonstrated that the pronounced broadening of the experimental spectra of structures grown using the “digital alloy technique” can be explained by the influence of interface roughness.

Original languageEnglish (US)
Pages (from-to)1512-1516
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume58
Issue number3
DOIs
StatePublished - Jan 1 1998

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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