Mixing of excitons and continuum states in quantum wells

D. A. Broido, Sung Ryul Yang

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A model for the excitonic absorption spectrum of quantum wells is presented that includes intersubband scattering and the interaction of bound and continuum excitonic states. This model is applied to the case of a quantum well subjected to uniaxial stress. For a certain region of stress a strong mixing of the ground (1s) state of the first light-hole exciton (11lh) and the excited (2p) state of the second heavy-hole exciton (12hh) is found. Furthermore, the 11hh continuum states mix strongly with these excitons and contribute substantially to the absorption. Very good quantitative agreement is obtained with experiment.

Original languageEnglish
Pages (from-to)11051-11055
Number of pages5
JournalPhysical Review B
Issue number17
Publication statusPublished - 1990 Dec 1
Externally publishedYes


ASJC Scopus subject areas

  • Condensed Matter Physics

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