Magnetooptics of (Zn,Cd,Mn)Te/ZnTe heterostructures with a small discontinuity in the valence band potential View Full Text


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Article Info

DATE

2008-02

AUTHORS

S. V. Zaitsev, I. V. Sedova, S. V. Sorokin, S. V. Ivanov

ABSTRACT

Magnetooptics in (Zn,Cd,Mn)Te/ZnTe semimagnetic heterostructures with quantum wells has been thoroughly studied. For the Mn-containing quantum wells, an ordinary giant spin splitting effect is observed: the complete circular polarization in magnetic fields B> 0.5 T, a great increase in the intensity associated with the suppression of Auger recombination in the Mn ions, and a strong red shift of the σ+ polarized component are observed. On the contrary, the behavior of structures with nonmagnetic quantum wells and distant semimagnetic ZnMnTe layers is opposite. This unusual behavior is attributed to a high sensitivity of the exciton bond energy to the variation of the valence band potential in the structures with a small band discontinuity; this is confirmed by the computations and allows us to estimate the band chemical discontinuity as −80 ± 20 meV in the ZnTe/CdTe system close to the photoemission data (T. M. Due, Phys. Rev. Lett. 58, 1127 (1987)). More... »

PAGES

802-806

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0021364008240065

DOI

http://dx.doi.org/10.1134/s0021364008240065

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1046539989


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