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      Confined optical phonon effects on the band gap renormalization in quantum wire structures

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      Author(s)
      Bennett, C. R.
      Güven, K.
      Tanatar, Bilal
      Date
      1999
      Source Title
      Physica B : Condensed Matter
      Print ISSN
      0921-4526
      Publisher
      Elsevier Science
      Volume
      263-264
      Pages
      546 - 548
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      We consider the different approximations for the bandgap renormalization (BGR) within the random phase approximation (RPA), the quasi-static limit and the plasmon-pole approximation, and compare with the full result. We then include bulk optical phonons and also the phonon confinement using the phonons from the dielectric continuum (DC) model. We show that the results are very similar except at low densities where the quasi-static results overestimate the renormalization.
      Keywords
      Approximation theory
      Energy gap
      Mathematical models
      Phonons
      Bandgap renormalization
      Phonon confinement
      Semiconductor quantum wires
      Permalink
      http://hdl.handle.net/11693/25261
      Published Version (Please cite this version)
      http://dx.doi.org/10.1016/S0921-4526(98)01256-3
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      • Department of Physics 2550
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