Lee, S. and Michl, F. and Rössler, Ulrich and Dobrowolska, M. and Furdyna, J. (1998) Magnetoexcitons and Landau levels in strained ZnTe and ZnSe layers. Journal of Crystal Growth 184-18, pp. 1105-1109.
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Interband absorption in ultra-thin strained MBE-grown epilayers of ZnTe and ZnSe has been measured in magnetic fields up to 6 T. The spectra simultaneously uncover two effects of the magnetic field: diamagnetic shifts of exciton states, and the rich oscillatory structure arising from formation of Landau levels in the continuum. The observed spectral features are analyzed using the 8 × 8 k·p model, which takes into account the residual strain introduced during sample preparation. From this analysis we extract values for both the energy gaps and the exciton binding energies with high accuracy. Effects of electron—hole correlation and resonant magneto-polaron coupling in the continuum absorption are also discussed.
|Date:||2 February 1998|
|Institutions:||Physics > Institute of Theroretical Physics > Retired Professors > Group Ulrich Rössler|
|Keywords:||II–VI Semiconductors; Magnetoabsorption; Magnetoexcitons; Magneto-polaron coupling; Landau levels|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||20 Mar 2007|
|Last Modified:||20 Jul 2011 20:55|