Exciton formation and stability in semiconductor heterostructures

S. Siggelkow, W. Hoyer, M. Kira, S. W. Koch

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

The formation and stability of excitons in semiconductors is studied on the basis of a microscopic model that includes Coulomb interacting fermionic electrons and holes as well as phonons. Whereas quasiequilibrium calculations predict substantial exciton fractions coexisting with an electron-hole plasma at low temperatures and densities, dynamic calculations reveal that the exciton formation times under these conditions exceed the characteristic lifetimes. At elevated densities, good agreement between dynamical and quasiequilibrium calculations is obtained.

Original languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume69
Issue number7
DOIs
StatePublished - Feb 20 2004

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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