Resonant Raman scattering of quantum dots

C. Steinebach, C. Schüller, and D. Heitmann
Phys. Rev. B 59, 10240 – Published 15 April 1999
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Abstract

We theoretically investigate the resonant Raman scattering of GaAs quantum dots. The electron system is treated within the time-dependent local-density approximation and the cross section is calculated by including valence-band states as intermediate states in the scattering process. We show that, besides the strongly collective charge-density excitations and spin-density excitations, which dominate the spectra in the nonresonant case, additional modes close to the single-particle level spacings become resonant for certain laser energies in polarized and depolarized geometry. However, these modes are also subjected to a small collective shift and occur at slightly different energies in the two polarization geometries.

  • Received 7 October 1998

DOI:https://doi.org/10.1103/PhysRevB.59.10240

©1999 American Physical Society

Authors & Affiliations

C. Steinebach, C. Schüller, and D. Heitmann

  • Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Jungiusstraße 11, 20355 Hamburg, Germany

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Vol. 59, Iss. 15 — 15 April 1999

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