Band structure of semimagneticHg1−yMnyTequantum wells

2004/09/15 by E. G. Novik, A. Pfeuffer-Jeschke, T. Jungwirth +5 · 12 citations
Chemistry · Engineering · Physics and Astronomy · #Advanced Semiconductor Detectors and Materials #Chemistry #Condensed matter physics #Crystallography #Physics #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #Type (biology) #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.72.035321

12 pages, 4 figures

arxiv created 2004/09/15 · openalex publication_date 2005/07/12 · arxiv updated 2009/12/01 · openalex created_date 2020/05/13 · openalex updated_date 2026/08/05

Abstract

The band structure of semimagnetic Hg_1\ensuremath-yMn_yTe∕Hg_1\ensuremath-xCd_xTe type-III quantum wells (QW's) has been calculated using an eight-band \mathbitk∙\mathbitp 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\text\ensuremath-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\text\ensuremath-d exchange interaction on the transport properties of Hg_1\ensuremath-yMn_yTe∕Hg_1\ensuremath-xCd_xTe QW's.

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