Half-Parabolic Quantum Wells of Diluted Magnetic Semiconductor Cd1-xMnxTe

M. Kutrowski, T. Wojtowicz, G. Cywiński, G. Karczewski, E. Janik, E. Dynowska, J. Kossut Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland P. Kossacki Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland R. Fiederling, A. Pfeuffer-Jeschke and W. Ossau Physikalisches Institut der Universität, Würzburg, 97074 Würzburg, Germany

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We report on magnetooptical studies of MBE-grown half-parabolic CdTe/CdxMn1-xTe quantum well structures. The value of the valence band offset Qv=0.4 ± 0.05 was determined by comparing energies of optical transitions in the absence of a magnetic field with model calculations. This value was verified by fitting the observed spin splitting of the lowest heavy hole (hh) state. We discuss also the temperature dependence of Qv.

DOI: 10.12693/APhysPolA.92.887 PACS numbers: 78.66.Hf, 75.50.Pp