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Band structure of semimagnetic Hg1-yMnyTe quantum wells

E. G. Novik·A. Pfeuffer-Jeschke·T. Jungwirth·V. Latussek·C. R. Becker·G. Landwehr·H. Buhmann·L. W. Molenkamp
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Abstract

The band structure of semimagnetic Hg_1-yMn_yTe/Hg_1-xCd_xTe type-III quantum wells has been calculated using eight-band kp 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 Hg_0.98Mn_0.02Te/Hg_0.3Cd_0.7Te 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 Hg_1-yMn_yTe/Hg_1-xCd_xTe QW's.

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E. G. Novik, A. Pfeuffer-Jeschke, T. Jungwirth, V. Latussek, C. R. Becker, G. Landwehr, H. Buhmann, L. W. Molenkamp. 2004-09-15. Band structure of semimagnetic Hg1-yMnyTe quantum wells. https://doi.org/10.1103/physrevb.72.035321

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