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Variation of the wave-function localization on the monolayer scale in GaSb quantum wells probed by magnetoluminescence

P. V. Giugno, A. L. Convertino, R. Rinaldi, R. Cingolani, J. Massies, and M. Leroux
Phys. Rev. B 52, R11591(R) – Published 15 October 1995
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Abstract

The wave-function localization on a single-monolayer length scale is studied by magnetophotoluminescence in GaSb quantum wells of thickness ranging between 5 and 40 ML. The excitonic effects are found to be important only in the low-field range (B<2 T), whereas free-carrier localization dominates at higher field values. Variational calculations of the excitonic transverse extension provide a quantitative description of the experimental data. The high sensitivity of the magnetoluminescence to the modifications of the wave function, even on the scale of a single monolayer, has been used to deduce experimentally the dependence of the effective reduced mass on the well width.

  • Received 1 June 1995

DOI:https://doi.org/10.1103/PhysRevB.52.R11591

©1995 American Physical Society

Authors & Affiliations

P. V. Giugno, A. L. Convertino, R. Rinaldi, and R. Cingolani

  • Dipartimento di Scienza dei Materiali, Università di Lecce, Via Arnesano, 73100 Lecce, Italy

J. Massies and M. Leroux

  • Centre de Recherche sur l’Hetero-Epitaxie et ses Applications, Sophia Antipolis, CNRS, 06569 (F06560) Valbonne, France

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Issue

Vol. 52, Iss. 16 — 15 October 1995

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