Evidence of nonperturbative continuum correlations in two-dimensional exciton systems in semiconductor microcavities

Nai-Hang Kwong, R. Takayama, I. Rumyantsev, M. Kuwata-Gonokami, Rudolf Binder

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Abstract

In nonlinear semiconductor optics, two-particle scattering is often being modeled successfully within the second Born approximation (2nd BA) of the Coulomb interaction. It is shown in this paper that, at low energies, such a perturbative treatment of Coulomb correlations applied to exciton-exciton scattering in two-dimensional systems fails even qualitatively (unless phenomenological or self-consistent dephasing processes are included in the theory). We show that the failure of the 2nd BA in two dimensions can be inferred from a comparison of our theoretical results with reported experiments of four-wave mixing signals from semiconductor microcavities.

Original languageEnglish (US)
JournalPhysical Review Letters
Volume87
Issue number2
DOIs
StatePublished - Jun 22 2001

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excitons
continuums
scattering
Born approximation
four-wave mixing
optics
interactions
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Evidence of nonperturbative continuum correlations in two-dimensional exciton systems in semiconductor microcavities. / Kwong, Nai-Hang; Takayama, R.; Rumyantsev, I.; Kuwata-Gonokami, M.; Binder, Rudolf.

In: Physical Review Letters, Vol. 87, No. 2, 22.06.2001.

Research output: Contribution to journalArticle

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