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Two-dimensional wannier excitons. Effects of a random adiabatic potential

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Il Nuovo Cimento D

Summary

We investigate the absorption spectrum and the distribution of radiative decay times for two-dimensional excitons in semiconductor quantum wells, as affected by an adiabatic white-noise random potential. Such a potential could result from atomic-scale fluctuations in the composition of an alloy semiconductor, or in quantum well thickness. We find in general that the shortest radiative decay time is directly proportional to the inhomogeneous width of the exciton line in absorption, itself proportional to the correlation parameter for the random potential.

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Author notes

  1. Al. L. Efros

    Present address: Beam Theory Section, Naval Research Laboratory, Washington DC, USA

  2. C. Wetzel

    Present address: Lawrence Berkeley Laboratory, University of California, Berkeley, CA, USA

Authors and Affiliations

  1. Technische Universität München, D-85747, Garching, Germany

    Al. L. Efros & C. Wetzel

  2. Physics Department, University of Utah, Salt Lake City, Utah, USA

    J. M. Worlock

Authors
  1. Al. L. Efros
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  2. C. Wetzel
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  3. J. M. Worlock
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Efros, A.L., Wetzel, C. & Worlock, J.M. Two-dimensional wannier excitons. Effects of a random adiabatic potential. Il Nuovo Cimento D 17, 1447–1452 (1995). https://doi.org/10.1007/BF02457225

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  • DOI: https://doi.org/10.1007/BF02457225

PACS 71.35

PACS 78.66

PACS 01.30.Cc

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