Spectrally resolved resonant Rayleigh scattering from excitons in GaAs quantum wells

D. Schwedt, Ch. Nacke, H. Stolz, S. Eshlaghi, S. Reuter, and A. Wieck
Phys. Rev. B 67, 195303 – Published 1 May 2003
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Abstract

We report investigations of highly resolved resonant Rayleigh scattering spectra from high quality GaAs quantum wells which were excited by a cw Ti:sapphire laser. Nevertheless, the resulting spectra show features of inhomogeneous broadening, such as resonance shifting and resonance fluorescence narrowing, arising from non-negligible localization of the excitons. Furthermore, the excitonic excitation dipoles were found to be preferentially aligned along (110) crystal axes. As a result, the Rayleigh component of the secondary emission does not necessarily reflect the polarization characteristics of the exciting laser.

  • Received 1 February 2002

DOI:https://doi.org/10.1103/PhysRevB.67.195303

©2003 American Physical Society

Authors & Affiliations

D. Schwedt*, Ch. Nacke, and H. Stolz

  • Universität Rostock, Fachbereich Physik, AG Halbleiterphysik Universitätsplatz 3, 18051 Rostock, Germany

S. Eshlaghi, S. Reuter, and A. Wieck

  • Ruhr-Universität Bochum, Lehrstuhl für angewandte Festkörperphysik Universitätsstraße 150, 44780 Bochum, Germany

  • *Electronic address: daniel.schwedt@physik.uni-rostock.de

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Vol. 67, Iss. 19 — 15 May 2003

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