Influence of Coulomb and phonon interaction on the exciton formation dynamics in semiconductor heterostructures

Walter Hoyer, Mackillo Kira, Stephan W Koch

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

A microscopic theory is developed to analyze the dynamics of exciton formation out of incoherent carriers in semiconductor heterostructures. The carrier Coulomb and phonon interaction is included consistently. A cluster expansion method is used to systematically truncate the hierarchy problem. By including all correlations up to the four-point (i.e. two-particle) level, the fundamental Fermionic substructure of excitons is fully described. The analysis shows that the exciton formation is an intricate process where Coulomb correlations rapidly build up on a picosecond time scale while phonon dynamics leads to true exciton formation on a nanosecond time scale.

Original languageEnglish (US)
Article number155113
Pages (from-to)1551131-15511317
Number of pages13960187
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number15
StatePublished - Apr 2003
Externally publishedYes

Fingerprint

Beam plasma interactions
Excitons
Heterojunctions
excitons
Semiconductor materials
interactions
substructures
hierarchies
expansion
LDS 751

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Influence of Coulomb and phonon interaction on the exciton formation dynamics in semiconductor heterostructures. / Hoyer, Walter; Kira, Mackillo; Koch, Stephan W.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 67, No. 15, 155113, 04.2003, p. 1551131-15511317.

Research output: Contribution to journalArticle

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