Structure and zero-dimensional polariton spectrum of natural defects in GaAs/AlAs microcavities

  title={Structure and zero-dimensional polariton spectrum of natural defects in GaAs/AlAs microcavities},
  author={Joanna M. Zajac and Wolfgang Werner Langbein},
  journal={Physical Review B},
We present a correlative study of structural and optical properties of natural defects in planar semiconductor microcavities grown by molecular beam epitaxy, which are showing a localized polariton spectrum as reported in Zajac et al., Phys. Rev. B 85, 165309 (2012). The three-dimensional spatial structure of the defects was studied using combined focussed ion beam (FIB) and scanning electron microscopy (SEM). We find that the defects originate from a local increase of a GaAs layer thickness… 

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