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Reduction of Electon-Phonon Scattering Rates by Total Spatial Quantization

  • M. A. Reed
  • R. T. Bate
  • W. M. Duncan
  • W. R. Frensley
  • H. D. Shih
Conference paper
Part of the Springer Series in Electrophysics book series (SSEP, volume 21)

Abstract

The physics of spatially quantized systems has been the subject of intense investigation since the introduction of MBE and MOCVD. Quantum wells have been exhaustively examined since the seminal works of Dingle et al[1]. More recently, studies on quantum wires[2] have yielded interesting new properties. Here, we present data on a completely spatial quantized system that shows unique photoluminescence structure resulting from an electron or hole phonon scattering bottleneck. This paper discloses evidence of the modification of carrier-phonon scattering rates by the imposition of complete spatial quantization on GaAs-AlGaAs quantum wells. The photoluminescence spectra exhibit striking structure in the normal intrinsic exciton luminescence of the confined quantum well states which is best explained by a bottleneck for electron/hole energy loss. We believe that this bottleneck is a direct consequence of the quantization of the electronic and/or phonon dispersion relations. This photoluminescence structure does not occur for samples of higher dimensionality.

Keywords

Quantum Wire Heavy Hole Light Hole Phonon Dispersion Relation Spatial Quantization 
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References

  1. 1.
    R. Dingle, A. C. Gossard, and W. Wiegmann, Phys. Rev. Lett. 34, 1327(1975).CrossRefGoogle Scholar
  2. 2.
    W. J. Skocpol, L. D. Jackel, E. L. Hu, R. E. Howard, and L. A. Fetter, Phys. Rev. Lett. 49, 951(1982).CrossRefGoogle Scholar
  3. 3.
    E. M. Conwell, High Field Transport in Semiconductors, Solid State Physics Supplement 9, F. Seitz, D. Turnbull, H. Ehrenreich, eds. (Academic Press Inc., New York, 1967).Google Scholar
  4. 4.
    J. Christen, D. Bimberg, A. Steckenborn, and G. Weimann, Appl. Phys. Lett. 44, 84 (1984).CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1985

Authors and Affiliations

  • M. A. Reed
    • 1
  • R. T. Bate
    • 1
  • W. M. Duncan
    • 1
  • W. R. Frensley
    • 1
  • H. D. Shih
    • 1
  1. 1.Central Research LaboratoriesTexas Instruments IncorporatedDallasUSA

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