Band structure of semimagnetic Hg1-yMnyTe quantum wells -: art. no. 035321

被引：270
作者：
Novik, EG
Pfeuffer-Jeschke, A
Jungwirth, T
Latussek, V
Becker, CR
Landwehr, G
Buhmann, H
Molenkamp, LW
机构：
[1] Acad Sci Czech Republ, Inst Phys, Prague 16253, Czech Republic
[2] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England
[3] Univ Texas, Dept Phys, Austin, TX 78712 USA
来源：
PHYSICAL REVIEW B | 2005年 / 72卷 / 03期
关键词：
D O I：
10.1103/PhysRevB.72.035321
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The band structure of semimagnetic Hg1-yMnyTe/Hg1-xCdxTe type-III quantum wells (QW's) has been calculated using an 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.
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页数：12
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