EXCITED EXCITON-STATES IN CDTE/(CDMN)TE QUANTUM-WELLS

被引：14
作者：
KUHN, B
OSSAU, W
WAAG, A
BICKNELLTASSIUS, RN
LANDWEHR, G
机构：
[1] Physikalisches Institut, Universität Würzburg, W-8700 Würzburg, Am Hubland, D
来源：
JOURNAL OF CRYSTAL GROWTH | 1992年 / 117卷 / 1-4期
关键词：
D O I：
10.1016/0022-0248(92)90875-J
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
We report low temperature photoluminescence excitation measurements on CdTe/(CdMn)Te single quantum wells in magnetic fields up to 7.5 T. From the analysis of the 2s state of the heavy-hole exciton, we deduce the binding energy as a function of the well width. By comparison of the asymmetric Zeeman splitting of the heavy-hole exciton with results of variational calculations for the exciton energies in an external magnetic field, we determine the valance band offset to 20% +/- 10% of the bandgap discontinuity. This non-vanishing valence band offset allows us to study exciton transitions from excited subbands.
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收藏
页码：871 / 876
页数：6
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