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Internal electron-electron interactions in one-dimensional systems detected by Raman spectroscopy

C. Steinebach, R. Krahne, G. Biese, C. Schüller, D. Heitmann, and K. Eberl
Phys. Rev. B 54, R14281(R) – Published 15 November 1996
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Abstract

We have investigated experimentally and theoretically electronic Raman excitations in GaAs-AlxGa1xAs quantum wires in magnetic fields. In both the experiments and the calculations we find strong anticrossings of the observed confined magnetoplasmon modes in the vicinity of 2ωc, where ωc is the cyclotron-resonance frequency. The observed splittings and anticrossings arise from internal Coulomb interaction in the one-dimensional electron systems and is found to depend sensitively not only on the wave vector but also on the shape of the confining potential and the mode index of the confined plasmon mode. © 1996 The American Physical Society.

  • Received 15 August 1996

DOI:https://doi.org/10.1103/PhysRevB.54.R14281

©1996 American Physical Society

Authors & Affiliations

C. Steinebach, R. Krahne, G. Biese, C. Schüller, and D. Heitmann

  • Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Universität Hamburg, Jungiusstraβe 11, D-20355 Hamburg, Germany

K. Eberl

  • Max-Planck-Institut für Festkörperforschung, Heisenbergstraβe 1, D-70569 Stuttgart, Germany

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Issue

Vol. 54, Iss. 20 — 15 November 1996

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