Time-resolved photoluminescence (PL) and optical pump-probe experiments were carried out in Cd1-xMnxTe/ZnTe multiple quantum wells to study the dynamics of the excitonic magnetic polaron in this material. In the pump-probe data, three signals were detected. The main signal is negative and monitors the energy relaxation of the excitons created by the pump pulse. The other two pump-probe signals are positive and their intensity grows while the excitons created by the pump pulse recombine. The low-energy positive pump-probe signal is found to track the average Mn spin polarization in the sample. Instead, the high-energy positive peak indicates the enhancement of the density of states due to correlation effects.
|ジャーナル||Journal of Luminescence|
|出版ステータス||Published - 2000 5|
|イベント||International Conference on Luminescence and Optical Spectroscopy of Condensed Matter (ICL'99) - Osaka, Jpn|
継続期間: 1999 8 23 → 1999 8 27
ASJC Scopus subject areas
- 化学 (全般)