Lee, Soojoon and Michl, F. and Rössler, Ulrich and Dobrowolska, M. and Furdyna, J. (1998) Interband magnetoabsorption in strained epitaxially grown ZnTe and ZnSe. Physical Review B 57 (16), pp. 9695-9704.
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Other URL: http://link.aps.org/abstract/PRB/v57/p9695
Interband absorption in ultrathin epilayers of ZnTe and ZnSe has been measured in magnetic fields up to 6 T with photon energies below and above the fundamental gap. The spectra clearly show the evolution of the 1s and 2s exciton states and of the rich structure arising from the formation of Landau levels in the continuum. The observed spectral features are analyzed using the 8 x 8 model, which takes into account the residual strain introduced during sample preparation. From this analysis we extract highly accurate values for the energy gaps and the exciton binding energies. Effects of electron-hole correlation and resonant magnetopolaron coupling are also clearly detected in the continuum absorption. We discuss the dependence of these effects on Landau quantum number and the magnetic field by comparing the experimental transition energies with calculated ones.
|Institutions:||Physics > Institute of Theroretical Physics > Retired Professors > Group Ulrich Rössler|
|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|