Excitonic effects in diluted magnetic semiconductor nanostructures
Oka Yasuo1
1RISM, Tohoku University Katahira 2--1--1, Aoba-ku, Sendai 980--77, Japan CREST, JST, Kawaguchi, 332, Japan
Выставление онлайн: 19 апреля 1998 г.
Excitonic properties and the dynamics are reported in quantum dots (QDs) and quantum wells (QW) of diluted magnetic semiconductors. Transient spectroscopies of photoluminescence and nonlinear-optical absorption and emission have been made on these quantum nanostructures. The Cd1-xMnxSe QDs show the excitonic magnetic polaron effect with an increased binding energy. The quantum wells of the Cd1-xMnxTe/ZnTe system display fast energy and dephasing relaxations of the free and localized excitons as well as the tunneling process of carriers and excitons in the QWs depending on the barrier widths. The observed dynamics and the enhanced excitonic effects are the inherent properties of the diluted magnetic nanostructures.
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