Magneto-Absorption in a Hg1−xMnx Te-CdTe Superlattice: Evidence of the Exchange Interaction in a Semimagnetic Semiconducting Superlattice
We discuss far-infrared magneto-absorption experiments performed on a Hgos5Mnoo4Te-CdTe superlattice over a temperature range from 1.5 to 10 K. The results are interpreted from superlattice band-structure calculations which include the magnetic field. The temperature dependence of the cyclotron resonance and interband transitions show evidence of the exchange interaction between the localized Mn d-electrons and the conduction band electrons in this semimagnetic semiconducting superlattice. We also discuss very recent results which appear to resolve the valence-band offset dilemma in HgTe-CdTe superlattices and the impact of those results on our interpretation of the magneto-absorption data.
KeywordsCyclotron Resonance Landau Level Interband Transition Band Structure Calculation Conduction Band Electron
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