Density dependence of the spectral dielectric function across a Fano resonance

M. Marquezini, P. Kner, S. Bar-Ad, J. Tignon, D. Chemla

Research output: Contribution to journalArticlepeer-review

Abstract

We study the effects of photocarrier density on a magnetically induced Fano resonance in GaAs, using a combined phase-amplitude transmission spectroscopy technique. By comparing our results to an extension of the Fano model we measure the relative contributions of two, usually undistinguished, effects of the photocarriers: the screening of the inter-Landau-level Coulomb coupling, and the induced collisional broadening of the coupled discrete-state/continuum natural linewidth.

Original languageEnglish
Pages (from-to)3745-3748
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume57
Issue number7
DOIs
StatePublished - 1998
Externally publishedYes

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