Magnetic oscillation of many-body effects in CdTe based modulation doped quantum wells
β Scribed by J.X. Shen; W. Ossau; F. Fischer; A. Waag; G. Landwehr
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 258 KB
- Volume
- 159
- Category
- Article
- ISSN
- 0022-0248
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Studies of shallow donor impurities confined in semiconductor quantum-well (QW) structures are reviewed, concentrating on recent experimental (far infrared spectroscopy) and theoretical investigations of negative donor ions (D Β± Β± ) and the effects of excess electrons on the donor-related transition
The positively and negatively charged excitons, X + and X -, respectively, are identified by their magnetic circular dichroism in the absorption spectra of modulationdoped CdTe/Cd 0.69 Mg 0.23 Zn 0.08 Te multiple quantum wells at small carrier densities (β 10 10 cm -2 ). In these quantum wells with