Anisotropy of the Zeeman effect in CdTe/Cd1xMnxTe multiple quantum wells

P. Peyla, A. Wasiela, Y. Merle d’Aubigné, D. E. Ashenford, and B. Lunn
Phys. Rev. B 47, 3783 – Published 15 February 1993
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Abstract

Incorporation of diluted magnetic semiconductors as the barrier material in heterostructures is of great interest since it allows one to induce magnetically large variations of the conduction- and valence-band offsets which, in turn, give rise to large variations of the carrier confinement energies observed by optical spectroscopy. This Zeeman effect is now well understood for a field applied along the heterostructure growth axis. Then both the heavy- and light-hole-related lines split approximately symmetrically into two circularly polarized components. In this paper we analyze the Zeeman splitting observed for a magnetic field applied in the plane of the layers. Then at low field the heavy-hole splitting is vanishingly small. At larger fields, very strongly asymmetric splittings are observed, reflecting the change of the ‘‘best’’ quantization axis, from the growth axis to the field direction. The theoretical analysis accounts well for both the Zeeman splittings and the change in the intensities of the linearly polarized lines.

  • Received 22 July 1992

DOI:https://doi.org/10.1103/PhysRevB.47.3783

©1993 American Physical Society

Authors & Affiliations

P. Peyla, A. Wasiela, and Y. Merle d’Aubigné

  • Laboratoire de Spectrométrie Physique, Université Joseph Fourier Grenoble I, Boîte Postale 87, 38402 Saint Martin d’Hères CEDEX, France

D. E. Ashenford and B. Lunn

  • Department of Engineering Design and Manufacture, University of Hull, Hull HU6 7RX, United Kingdom

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Vol. 47, Iss. 7 — 15 February 1993

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