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1 Electron Technology

1 1998

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CdTe/Cd1-xMnxTe quantum structures investigated by photoreflectance spectroscopy

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Sitarek P. , Misiewicz J. , Karczewski G. , Wójtowicz T. , Kossut J.

tom Vol. 31, No. 3/4

311-314

Room temperature photoreflectance spectroscopy was used to investigate Cd1-xMnxTe/CdTe quantum structures grown by MBE technique. The system of four quantum wells of x = 0.28 with different thicknesses was under study first. The obtained spectrum showed a series of resonances which are attributed to the intersubband transitions. The second group of quantum structures were CdTe/Cd1-xMnxTe MQW. The samples were δ-doped in the middle of the wells by using indium. Transitions related to heavy holes in δ-doped wells were found to occur at different energies thaqn those in undoped wells. The influence of the strains on (CdMn)Te/CdTe quantum stryctures has been taken into account.