Photoluminescence investigations of two-dimensional hole Landau levels in <i>p</i>-type single <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Al</mi></mrow><mrow><mi>x</mi></mrow></msub></mrow><mrow><msub><mrow><mi mathvariant="normal">Ga</mi></mrow><mrow><mn>1</mn><mi>−</mi><mi>x</mi></mrow></msub></mrow><mi mathvariant="normal">A</mi><mi mathvariant="normal">s</mi><mo>/</mo><mi mathvariant="normal">G</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">A</mi><mi mathvariant="normal">s</mi></math></span> heterostructures

M. Kubisa; L. Bryja; K. Ryczko; J. Misiewicz; C. Bardot; M. Potemski; G. Ortner; M. Bayer; A. Forchel; C. B. Sørensen

doi:10.1103/PhysRevB.67.035305

Photoluminescence investigations of two-dimensional hole Landau levels in p-type single ${Al}_{x} {Ga}_{1 - x} A s / G a A s$ heterostructures

M. Kubisa, L. Bryja, K. Ryczko, J. Misiewicz, C. Bardot, M. Potemski, G. Ortner, M. Bayer, A. Forchel, and C. B. Sørensen

Phys. Rev. B 67, 035305 – Published 14 January 2003

Abstract

We study the energy structure of two-dimensional holes in p-type single ${Al}_{1 - x} {Ga}_{x} As / GaAs$ heterojunctions under a perpendicular magnetic field. Photoluminescence measurments with low densities of excitation power reveal rich spectra containing both free and bound-carrier transitions. The experimental results are compared with energies of valence-subband Landau levels calculated using a numerical procedure and good agreement is achieved. Additional lines observed in the energy range of free-carrier recombinations are attributed to excitonic transitions. We also consider the role of many-body effects in photoluminescence spectra.

Received 1 August 2002

DOI:https://doi.org/10.1103/PhysRevB.67.035305

Authors & Affiliations

M. Kubisa^*, L. Bryja, K. Ryczko, and J. Misiewicz

Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

C. Bardot and M. Potemski

Grenoble High Magnetic Field Laboratory MPI-FKF/CNRS, 25 Avenue des Martyrs, F-38042 Grenoble Cedex 9, France

G. Ortner, M. Bayer^†, and A. Forchel

Technische Physik, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany

C. B. Sørensen

The Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark

^*Email address: kubisa@if.pwr.wroc.pl
^†Present address: Experimentelle Physik II, Universität Dortmund, D-44221 Dortmund, Germany.

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Vol. 67, Iss. 3 — 15 January 2003

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