Theory of band gap renormalisation in modulation-doped quantum wells

Gerrit E.W. Bauer, Tsuneya Ando

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

The frequency of the photoluminescence radiation in modulation-doped quantum wells is theoretically investigated. The vertex correction which describes the effect of the interaction between the annihilating electron-hole pairs is shown to be negligible. Consequently the emission frequency is determined by the fundamental band gap, which requires the calculation of the self-energies of the valence band holes and the conduction band electrons. These calculations are carried out perturbationally using the plasmon-pole approximation for the dielectric function and variationally determined gaussian-type envelope functions. The electron and hole energy levels are also calculated self-consistently by local-density functional theory. The results of both theories agree with each other over a large range of conduction electron densities and explain recent experiments well.

Original languageEnglish
Pages (from-to)1537-1551
Number of pages15
JournalJournal of Physics C: Solid State Physics
Volume19
Issue number10
DOIs
Publication statusPublished - 1986 Apr 10
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Engineering(all)
  • Physics and Astronomy(all)

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