Magneto-Absorption in a Hg1−xMnx Te-CdTe Superlattice: Evidence of the Exchange Interaction in a Semimagnetic Semiconducting Superlattice
- 115 Downloads
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
Unable to display preview. Download preview PDF.
- 7.N.F. Johnson, P.M. Hui, and H. Ehrenreich, Phys. Rev. Lett. 61, 1993 (1988).Google Scholar
- 12.G. Bastard, Phys. Rev. B 24, 5693 (1981) and Phys. Rev. B 25, 7584 (1982)Google Scholar
- 17.See M. H. Weiler, in Semiconductors and Semimetals, edited by R. K. Willardson and A. C. Beer (Academic, New York, 1981 ), Vol. 16.Google Scholar
- 23.G. Barilero and C. Rigaux (private communication).Google Scholar