Nonparabolicity effects on cyclotron mass in GaAs quantum wells

S. Huant, A. Mandray, and B. Etienne
Phys. Rev. B 46, 2613 – Published 15 July 1992
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Abstract

Cyclotron-resonance measurements are reported on GaAs/(Ga,Al)As quantum wells of various thicknesses between 58 and 373 Å. It is found that the cyclotron mass can be understood in terms of a parallel effective mass which is more enhanced by conduction-band nonparabolicity than the perpendicular mass, relevant for calculating the confinement energies. The measured cyclotron-resonance masses agree well with the theoretical approach of Ekenberg [Phys. Rev. B 40, 7714 (1989)]. This confirms the validity of describing band nonparabolicity in terms of a reliable energy-dependent effective mass that can be used to compute, e.g., shallow donor levels in GaAs-based heterostructures.

  • Received 24 February 1992

DOI:https://doi.org/10.1103/PhysRevB.46.2613

©1992 American Physical Society

Authors & Affiliations

S. Huant and A. Mandray

  • Service National des Champs Intenses, Centre National de la Recherche Scientifique, Boîte Postale 166, 38042 Grenoble CEDEX 9, France

B. Etienne

  • Laboratoire de Microstructures et Microélectronique, Centre National de la Recherche Scientifique, Boîte Postale 107, 92225 Bagneux CEDEX, France

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Issue

Vol. 46, Iss. 4 — 15 July 1992

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