The band structure of semimagnetic Hg1−yMnyTe/Hg1−xCdxTe type-III quantum wells has been calculated using eight-band k · p model in an envelope function approach. Details of the band structure calculations are given for the Mn free case (y = 0). A mean field approach is used to take the influence of the sp − d exchange interaction on the band structure of QW's with low Mn concentrations into account. The calculated Landau level fan diagram and the density of states of a Hg0.98Mn0.02Te/Hg0.3Cd0.7Te QW are in good agreement with recent experimental transport observations. The model can be used to interpret the mutual influence of the two-dimensional confinement and the sp−d exchange interaction on the transport properties of Hg1−yMnyTe/Hg1−xCdxTe QW's.

No abstract

No abstract

No abstract

No abstract