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APS » Journals » Phys. Rev. B » Volume 42 » Issue 9
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Phys. Rev. B 42, 5891–5894 (1990)

Magnetic-field-induced type-I→type-II transition in a semimagnetic CdTe/Cd0.93Mn0.07Te superlattice

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E. Deleporte, J. M. Berroir, G. Bastard, and C. Delalande
Laboratoire de Physique de la Matière Condensée de l’Ecole Normale Supérieure, 24 rue Lhomond, 75005 Paris, France

J. M. Hong and L. L. Chang
IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598

Received 7 May 1990; published in the issue dated 15 September 1990

Magnetophotoluminescence- and photoluminescence-excitation-spectroscopy experiments are performed up to 5 T at 1.7 K in a 〈111〉-grown CdTe/Cd0.93Mn0.07Te superlattice. The results are compared with calculations of the level energies and of the exciton binding energies, that include field-induced negative offsets. A type-I→type-II transition is evidenced near 2 T and a value of 15%–20% of the bandgap energy difference is deduced for the valence-band offset.

© 1990 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.42.5891
DOI:
10.1103/PhysRevB.42.5891
PACS:
75.50.Rr
 
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